[PATCH v1 3/3] clk: rockchip: add clock controller for rk3036
Heiko Stuebner
heiko at sntech.de
Fri Aug 28 02:54:50 PDT 2015
Hi,
Am Freitag, 28. August 2015, 13:46:48 schrieb Xing Zheng:
> Add the clock tree definition for the new rk3036 SoC,
> but there are some issues to be fixed:
> 1. soc will crash if gpll run rate_change_remuxed
> 2. rk3036_clk_suspend and rk3036_clk_resume should be done
> in clk-rk3036.c
>
> ---
>
> Changes in v1:
> Signed-off-by: Xing Zheng <zhengxing at rock-chips.com>
>
> drivers/clk/rockchip/Makefile | 1 +
> drivers/clk/rockchip/clk-pll.c | 247 ++++++++++++++-
please split this into separate patches.
- addition of the new pll type
- three patches for binding-document, dt-binding header and clock controller
like in "clk: rockchip: add support for the clock-tree of the rk3368"
patches 4, 5 and 7:
"dt-bindings: add documentation of rk3036 clock controller"
"clk: rockchip: add dt-binding header for rk3036"
"clk: rockchip: add rk3036 clock controller"
so you should get in sum 4 clock patches.
[0] http://lists.infradead.org/pipermail/linux-rockchip/2015-July/003394.html
> drivers/clk/rockchip/clk-rk3036.c | 539
> ++++++++++++++++++++++++++++++++ drivers/clk/rockchip/clk.h |
> 30 ++
> include/dt-bindings/clock/rk3036-cru.h | 247 +++++++++++++++
> 5 files changed, 1063 insertions(+), 1 deletion(-)
> create mode 100644 drivers/clk/rockchip/clk-rk3036.c
> create mode 100644 include/dt-bindings/clock/rk3036-cru.h
>
> diff --git a/drivers/clk/rockchip/Makefile b/drivers/clk/rockchip/Makefile
> index b27edd6..d599829 100644
> --- a/drivers/clk/rockchip/Makefile
> +++ b/drivers/clk/rockchip/Makefile
> @@ -10,6 +10,7 @@ obj-y += clk-inverter.o
> obj-y += clk-mmc-phase.o
> obj-$(CONFIG_RESET_CONTROLLER) += softrst.o
>
> +obj-y += clk-rk3036.o
> obj-y += clk-rk3188.o
> obj-y += clk-rk3288.o
> obj-y += clk-rk3368.o
> diff --git a/drivers/clk/rockchip/clk-pll.c b/drivers/clk/rockchip/clk-pll.c
> index 96903ae..cf56826 100644
> --- a/drivers/clk/rockchip/clk-pll.c
> +++ b/drivers/clk/rockchip/clk-pll.c
> @@ -2,6 +2,9 @@
> * Copyright (c) 2014 MundoReader S.L.
> * Author: Heiko Stuebner <heiko at sntech.de>
> *
> + * Copyright (c) 2015 Rockchip Electronics Co. Ltd.
> + * Author: Xing Zheng <zhengxing at rock-chips.com>
> + *
> * This program is free software; you can redistribute it and/or modify
> * it under the terms of the GNU General Public License as published by
> * the Free Software Foundation; either version 2 of the License, or
> @@ -48,6 +51,8 @@ struct rockchip_clk_pll {
> #define to_rockchip_clk_pll_nb(nb) \
> container_of(nb, struct rockchip_clk_pll, clk_nb)
>
> +static int rockchip_rk3036_pll_wait_lock(struct rockchip_clk_pll *pll);
> +
> static const struct rockchip_pll_rate_table *rockchip_get_pll_settings(
> struct rockchip_clk_pll *pll, unsigned long rate)
> {
> @@ -90,6 +95,11 @@ static int rockchip_pll_wait_lock(struct rockchip_clk_pll
> *pll) unsigned int val;
> int delay = 24000000, ret;
>
> + /* the plls of rk3036 wait lock */
> + if (pll->type == pll_rk3036 || pll->lock_offset == -1) {
> + return rockchip_rk3036_pll_wait_lock(pll);
> + }
> +
according to the rk3036 trm I have the GRF_SOC_STATUS0 [6:4] also contains the
pll lock status like on the other socs. So you could just use the default
mechanism of asking the GRF lock status like the other socs do, without
needing to override the wait_lock .
> while (delay > 0) {
> ret = regmap_read(grf, pll->lock_offset, &val);
> if (ret) {
> @@ -305,6 +315,235 @@ static void rockchip_rk3066_pll_init(struct clk_hw
> *hw) rockchip_rk3066_pll_set_rate(hw, drate, prate);
> }
> }
> +/**
> + * PLL used in RK3036
> + */
> +
> +#define RK3036_PLL_RESET_DELAY(nr) ((nr * 500) / 24 + 1)
> +
> +#define RK3036_PLLCON(i) (i * 0x4)
> +#define RK3036_PLLCON0_FBDIV_MASK 0xfff
> +#define RK3036_PLLCON0_FBDIV_SHIFT 0
> +#define RK3036_PLLCON0_POSTDIV1_MASK 0x7
> +#define RK3036_PLLCON0_POSTDIV1_SHIFT 12
> +#define RK3036_PLLCON1_REFDIV_MASK 0x3f
> +#define RK3036_PLLCON1_REFDIV_SHIFT 0
> +#define RK3036_PLLCON1_POSTDIV2_MASK 0x7
> +#define RK3036_PLLCON1_POSTDIV2_SHIFT 6
> +#define RK3036_PLLCON1_DSMPD_MASK 0x1
> +#define RK3036_PLLCON1_DSMPD_SHIFT 12
> +#define RK3036_PLLCON2_FRAC_MASK 0xffffff
> +#define RK3036_PLLCON2_FRAC_SHIFT 0
> +
> +#define RK3036_MODECON 0x40
> +#define RK3036_MODECON_AWM (1 << 0) /* apll work mode */
> +
> +#define RK3036_PLLCON0_BYPASS (1 << 15)
> +#define RK3036_PLLCON1_LOCK_STATUS (1 << 10)
> +#define RK3036_PLLCON1_RESET (1 << 14)
> +
> +static int rockchip_rk3036_pll_wait_lock(struct rockchip_clk_pll *pll)
> +{
> + u32 pllcon;
> + int delay = 24000000;
> +
> + /* poll check the lock status in rk3036 xPLLCON1 */
> + while (delay > 0) {
> + pllcon = readl_relaxed(pll->reg_base + RK3036_PLLCON(1));
> + if (pllcon & RK3036_PLLCON1_LOCK_STATUS)
> + return 0;
> +
> + delay--;
> + }
> +
> + pr_err("%s: timeout waiting for pll to lock\n", __func__);
> + return -ETIMEDOUT;
> +}
> +
> +static unsigned long rockchip_rk3036_pll_recalc_rate(struct clk_hw *hw,
> + unsigned long prate)
> +{
> + struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
> + unsigned int fbdiv, postdiv1, refdiv, postdiv2, dsmpd, frac;
> + u64 rate64 = prate;
> + u32 pllcon;
> +
> + pllcon = readl_relaxed(pll->reg_base + RK3036_PLLCON(0));
> + fbdiv = ((pllcon >> RK3036_PLLCON0_FBDIV_SHIFT) &
> RK3036_PLLCON0_FBDIV_MASK); + postdiv1 = ((pllcon >>
> RK3036_PLLCON0_POSTDIV1_SHIFT) & RK3036_PLLCON0_POSTDIV1_MASK); +
> + pllcon = readl_relaxed(pll->reg_base + RK3036_PLLCON(1));
> + refdiv = ((pllcon >> RK3036_PLLCON1_REFDIV_SHIFT) &
> RK3036_PLLCON1_REFDIV_MASK); + postdiv2 = ((pllcon >>
> RK3036_PLLCON1_POSTDIV2_SHIFT) & RK3036_PLLCON1_POSTDIV2_MASK); + dsmpd =
> ((pllcon >> RK3036_PLLCON1_DSMPD_SHIFT) & RK3036_PLLCON1_DSMPD_MASK); +
> + pllcon = readl_relaxed(pll->reg_base + RK3036_PLLCON(2));
> + frac = ((pllcon >> RK3036_PLLCON2_FRAC_SHIFT) & RK3036_PLLCON2_FRAC_MASK);
> +
> + rate64 *= fbdiv;
> + do_div(rate64, refdiv);
> +
> + if (dsmpd == 0) {
> + /* fractional mode */
> + u64 frac_rate64 = prate * frac;
> +
> + do_div(frac_rate64, refdiv);
> + rate64 += frac_rate64 >> 24;
> + }
> +
> + do_div(rate64, postdiv1);
> + do_div(rate64, postdiv2);
> +
> + return (unsigned long)rate64;
> +}
> +
> +static int rockchip_rk3036_pll_set_rate(struct clk_hw *hw, unsigned long
> drate, + unsigned long prate)
> +{
> + struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
> + const struct rockchip_pll_rate_table *rate;
> + unsigned long old_rate = rockchip_rk3036_pll_recalc_rate(hw, prate);
> + struct regmap *grf = rockchip_clk_get_grf();
> + struct clk_mux *pll_mux = &pll->pll_mux;
> + const struct clk_ops *pll_mux_ops = pll->pll_mux_ops;
> + int rate_change_remuxed = 0;
> + int cur_parent;
> + int ret;
> +
> + if (IS_ERR(grf)) {
> + pr_debug("%s: grf regmap not available, aborting rate change\n",
> + __func__);
> + return PTR_ERR(grf);
> + }
> +
> + pr_debug("%s: changing %s from %lu to %lu with a parent rate of %lu\n",
> + __func__, __clk_get_name(hw->clk), old_rate, drate, prate);
> +
> + /* Get required rate settings from table */
> + rate = rockchip_get_pll_settings(pll, drate);
> + if (!rate) {
> + pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
> + drate, __clk_get_name(hw->clk));
> + return -EINVAL;
> + }
> +
> + pr_debug("%s: rate settings for %lu fbdiv: %d, postdiv1: %d, refdiv: %d,
> postdiv2: %d, dsmpd: %d, frac: %d\n", + __func__, rate->rate,
> + rate->fbdiv, rate->postdiv1, rate->refdiv, rate->postdiv2, rate-
>dsmpd,
> rate->frac); +
> + cur_parent = pll_mux_ops->get_parent(&pll_mux->hw);
> + if (cur_parent == PLL_MODE_NORM) {
> + pll_mux_ops->set_parent(&pll_mux->hw, PLL_MODE_SLOW);
> + rate_change_remuxed = 1;
> + }
> +
> + /* enter reset mode */
> + writel(HIWORD_UPDATE(1, RK3036_PLLCON1_RESET, 0), pll->reg_base +
> RK3036_PLLCON(1)); +
> + /* update pll values */
> + writel_relaxed(HIWORD_UPDATE(rate->fbdiv, RK3036_PLLCON0_FBDIV_MASK,
> + RK3036_PLLCON0_FBDIV_SHIFT) |
> + HIWORD_UPDATE(rate->postdiv1, RK3036_PLLCON0_POSTDIV1_MASK,
> + RK3036_PLLCON0_POSTDIV1_SHIFT),
> + pll->reg_base + RK3036_PLLCON(0));
> +
> + writel_relaxed(HIWORD_UPDATE(rate->refdiv, RK3036_PLLCON1_REFDIV_MASK,
> + RK3036_PLLCON1_REFDIV_SHIFT) |
> + HIWORD_UPDATE(rate->postdiv2, RK3036_PLLCON1_POSTDIV2_MASK,
> + RK3036_PLLCON1_POSTDIV2_SHIFT) |
> + HIWORD_UPDATE(rate->dsmpd, RK3036_PLLCON1_DSMPD_MASK,
> + RK3036_PLLCON1_DSMPD_SHIFT),
> + pll->reg_base + RK3036_PLLCON(1));
> +
> + writel_relaxed(HIWORD_UPDATE(rate->frac, RK3036_PLLCON2_FRAC_MASK,
> + RK3036_PLLCON2_FRAC_SHIFT),
> + pll->reg_base + RK3036_PLLCON(2));
> +
> + /* recover normal mode and wait the reset_delay */
> + writel(HIWORD_UPDATE(0, RK3036_PLLCON1_RESET, 0), pll->reg_base +
> RK3036_PLLCON(1)); + udelay(RK3036_PLL_RESET_DELAY(rate->refdiv));
> +
> + /* wait for the pll to lock */
> + ret = rockchip_pll_wait_lock(pll);
> + if (ret) {
> + pr_warn("%s: pll did not lock, trying to restore old rate %lu\n",
> + __func__, old_rate);
> + rockchip_rk3036_pll_set_rate(hw, old_rate, prate);
> + }
> +
> +#if 0 /* FIXME: soc will crash if gpll run here */
> + if (rate_change_remuxed)
> + pll_mux_ops->set_parent(&pll_mux->hw, PLL_MODE_NORM);
> +#endif
please don't leave commented code ("if 0") around and we should of course find
out what is failing beforehand, so this can be enabled again.
Because as the code stands now, you're running on the gpll all the time.
> +
> + return ret;
> +}
> +static void rockchip_rk3036_pll_init(struct clk_hw *hw)
> +{
> + struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
> + const struct rockchip_pll_rate_table *rate;
> + unsigned int fbdiv, postdiv1, refdiv, postdiv2, dsmpd, frac;
> + unsigned long drate;
> + u32 pllcon;
> +
> + if (!(pll->flags & ROCKCHIP_PLL_SYNC_RATE))
> + return;
> +
> + drate = __clk_get_rate(hw->clk);
> + rate = rockchip_get_pll_settings(pll, drate);
> +
> + /* when no rate setting for the current rate, rely on clk_set_rate */
> + if (!rate)
> + return;
> +
> + pllcon = readl_relaxed(pll->reg_base + RK3036_PLLCON(0));
> + fbdiv = ((pllcon >> RK3036_PLLCON0_FBDIV_SHIFT) &
> RK3036_PLLCON0_FBDIV_MASK); + postdiv1 = ((pllcon >>
> RK3036_PLLCON0_POSTDIV1_SHIFT) & RK3036_PLLCON0_POSTDIV1_MASK); +
> + pllcon = readl_relaxed(pll->reg_base + RK3036_PLLCON(1));
> + refdiv = ((pllcon >> RK3036_PLLCON1_REFDIV_SHIFT) &
> RK3036_PLLCON1_REFDIV_MASK); + postdiv2 = ((pllcon >>
> RK3036_PLLCON1_POSTDIV2_SHIFT) & RK3036_PLLCON1_POSTDIV2_MASK); + dsmpd =
> ((pllcon >> RK3036_PLLCON1_DSMPD_SHIFT) & RK3036_PLLCON1_DSMPD_MASK); +
> + pllcon = readl_relaxed(pll->reg_base + RK3036_PLLCON(2));
> + frac = ((pllcon >> RK3036_PLLCON2_FRAC_SHIFT) & RK3036_PLLCON2_FRAC_MASK);
> +
> + pr_info("%s: pll %s@%lu: Hz\n", __func__, __clk_get_name(hw->clk), drate);
> + pr_info("old - fbdiv: %d, postdiv1: %d, refdiv: %d, postdiv2: %d, dsmpd:
> %d, frac: %d\n", + fbdiv, postdiv1, refdiv, postdiv2, dsmpd, frac);
> + pr_info("new - fbdiv: %d, postdiv1: %d, refdiv: %d, postdiv2: %d, dsmpd:
> %d, frac: %d\n", + rate->fbdiv, rate->postdiv1, rate->refdiv,
> rate->postdiv2, rate->dsmpd, rate->frac);
please don't leave pr_info calls for debug messages in the code, like in the
rk3066 pll-type these should be pr_debug.
> +
> + if (rate->fbdiv != fbdiv || rate->postdiv1 != postdiv1 || rate->refdiv !=
> refdiv || + rate->postdiv2 != postdiv2 || rate->dsmpd != dsmpd ||
> rate->frac != frac) { + struct clk *parent = __clk_get_parent(hw->clk);
> + unsigned long prate;
> +
> + if (!parent) {
> + pr_warn("%s: parent of %s not available\n",
> + __func__, __clk_get_name(hw->clk));
> + return;
> + }
> +
> + pr_info("%s: pll %s: rate params do not match rate table,
adjusting\n",
> + __func__, __clk_get_name(hw->clk));
> + prate = __clk_get_rate(parent);
> + rockchip_rk3036_pll_set_rate(hw, drate, prate);
> + }
> +}
> +static const struct clk_ops rockchip_rk3036_pll_clk_norate_ops = {
> + .recalc_rate = rockchip_rk3036_pll_recalc_rate,
> + .round_rate = rockchip_pll_round_rate,
> + .set_rate = rockchip_rk3036_pll_set_rate,
> + .init = rockchip_rk3036_pll_init,
> +};
the ops for plls without rate table should not contain round_rate and set_rate
callbacks, as without rate-table you of course cannot set any rate
> +
> +static const struct clk_ops rockchip_rk3036_pll_clk_ops = {
> + .recalc_rate = rockchip_rk3036_pll_recalc_rate,
> + .round_rate = rockchip_pll_round_rate,
> + .set_rate = rockchip_rk3036_pll_set_rate,
> + .init = rockchip_rk3036_pll_init,
> +};
The rk3036 pll-type also has a powerdown function it seems (xPLL_CON1[13]), so
you can also add appropriate enable, disable and is_enabled callbacks for both
ops structs.
> static const struct clk_ops rockchip_rk3066_pll_clk_norate_ops = {
> .recalc_rate = rockchip_rk3066_pll_recalc_rate,
> @@ -385,6 +624,12 @@ struct clk *rockchip_clk_register_pll(enum
> rockchip_pll_type pll_type, else
> init.ops = &rockchip_rk3066_pll_clk_ops;
> break;
> + case pll_rk3036:
> + if (!pll->rate_table)
> + init.ops = &rockchip_rk3036_pll_clk_norate_ops;
> + else
> + init.ops = &rockchip_rk3036_pll_clk_ops;
> + break;
> default:
> pr_warn("%s: Unknown pll type for pll clk %s\n",
> __func__, name);
> @@ -408,7 +653,7 @@ struct clk *rockchip_clk_register_pll(enum
> rockchip_pll_type pll_type, pll_mux->lock = lock;
> pll_mux->hw.init = &init;
>
> - if (pll_type == pll_rk3066)
> + if (pll_type == pll_rk3066 || pll_type == pll_rk3036)
> pll_mux->flags |= CLK_MUX_HIWORD_MASK;
>
> pll_clk = clk_register(NULL, &pll->hw);
> diff --git a/drivers/clk/rockchip/clk-rk3036.c
> b/drivers/clk/rockchip/clk-rk3036.c new file mode 100644
> index 0000000..19cdf0e
> --- /dev/null
> +++ b/drivers/clk/rockchip/clk-rk3036.c
> @@ -0,0 +1,539 @@
> +/*
> + * Copyright (c) 2014 MundoReader S.L.
> + * Author: Heiko Stuebner <heiko at sntech.de>
> + *
> + * Copyright (c) 2015 Rockchip Electronics Co. Ltd.
> + * Author: Xing Zheng <zhengxing at rock-chips.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/clk-provider.h>
> +#include <linux/of.h>
> +#include <linux/of_address.h>
> +#include <linux/syscore_ops.h>
> +#include <dt-bindings/clock/rk3036-cru.h>
> +#include "clk.h"
> +
> +enum rk3036_plls {
> + apll, dpll, gpll,
> +};
> +
> +static struct rockchip_pll_rate_table rk3036_pll_rates[] = {
> + /* _mhz, _refdiv, _fbdiv, _postdiv1, _postdiv2, _dsmpd, _frac */
> + RK3036_PLL_RATE(1608000000, 1, 67, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1584000000, 1, 66, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1560000000, 1, 65, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1536000000, 1, 64, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1512000000, 1, 63, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1488000000, 1, 62, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1464000000, 1, 61, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1440000000, 1, 60, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1416000000, 1, 59, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1392000000, 1, 58, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1368000000, 1, 57, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1344000000, 1, 56, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1320000000, 1, 55, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1296000000, 1, 54, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1272000000, 1, 53, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1248000000, 1, 52, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1200000000, 1, 50, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1188000000, 2, 99, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1104000000, 1, 46, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1100000000, 12, 550, 1, 1, 1, 0),
> + RK3036_PLL_RATE(1008000000, 1, 84, 2, 1, 1, 0),
> + RK3036_PLL_RATE(1000000000, 6, 500, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 984000000, 1, 82, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 960000000, 1, 80, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 936000000, 1, 78, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 912000000, 1, 76, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 900000000, 4, 300, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 888000000, 1, 74, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 864000000, 1, 72, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 840000000, 1, 70, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 816000000, 1, 68, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 800000000, 6, 400, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 700000000, 6, 350, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 696000000, 1, 58, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 600000000, 1, 75, 3, 1, 1, 0),
> + RK3036_PLL_RATE( 594000000, 2, 99, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 504000000, 1, 63, 3, 1, 1, 0),
> + RK3036_PLL_RATE( 500000000, 6, 250, 2, 1, 1, 0),
> + RK3036_PLL_RATE( 408000000, 1, 68, 2, 2, 1, 0),
> + RK3036_PLL_RATE( 312000000, 1, 52, 2, 2, 1, 0),
> + RK3036_PLL_RATE( 216000000, 1, 72, 4, 2, 1, 0),
> + RK3036_PLL_RATE( 96000000, 1, 64, 4, 4, 1, 0),
> + RK3036_PLL_RATE(0, 1, 0, 1, 1, 1, 0),
> + { /* sentinel */ },
> +};
> +
> +#define RK3036_DIV_CPU_MASK 0x1f
> +#define RK3036_DIV_CPU_SHIFT 8
> +
> +#define RK3036_DIV_PERI_MASK 0xf
> +#define RK3036_DIV_PERI_SHIFT 0
> +#define RK3036_DIV_ACLK_MASK 0x7
> +#define RK3036_DIV_ACLK_SHIFT 4
> +#define RK3036_DIV_HCLK_MASK 0x3
> +#define RK3036_DIV_HCLK_SHIFT 8
> +#define RK3036_DIV_PCLK_MASK 0x7
> +#define RK3036_DIV_PCLK_SHIFT 12
> +
> +#define RK3036_CLKSEL1(_core_periph_div) \
> + { \
> + .reg = RK2928_CLKSEL_CON(1), \
> + .val = HIWORD_UPDATE(_core_periph_div, RK3036_DIV_PERI_MASK, \
> + RK3036_DIV_PERI_SHIFT) \
> + }
> +
> +#define RK3036_CPUCLK_RATE(_prate, _core_periph_div) \
> + { \
> + .prate = _prate, \
> + .divs = { \
> + RK3036_CLKSEL1(_core_periph_div), \
> + }, \
> + }
> +
> +static struct rockchip_cpuclk_rate_table rk3036_cpuclk_rates[] __initdata =
> { + RK3036_CPUCLK_RATE(816000000, 4),
> + RK3036_CPUCLK_RATE(600000000, 4),
> + RK3036_CPUCLK_RATE(312000000, 4),
> +};
this seems to be missing divider settings for aclk_core? I only see the core-
periph ones (for pclk_dbg) but not for aclk_core that is also sourced from the
cpuclk?
> +
> +static const struct rockchip_cpuclk_reg_data rk3036_cpuclk_data = {
> + .core_reg = RK2928_CLKSEL_CON(0),
> + .div_core_shift = 0,
> + .div_core_mask = 0x1f,
> + .mux_core_shift = 7,
> +};
> +
> +PNAME(mux_pll_p) = { "xin24m", "xin24m" };
> +
> +PNAME(mux_armclk_p) = { "apll", "gpll_armclk" };
> +PNAME(mux_busclk_p) = { "apll", "dpll_cpu", "gpll_cpu" };
> +PNAME(mux_ddrphy_p) = { "dpll_ddr", "gpll_ddr" };
> +PNAME(mux_pll_src_3plls_p) = { "apll", "dpll", "gpll" };
> +PNAME(mux_timer_p) = { "xin24m", "pclk_peri_src" };
> +
> +PNAME(mux_pll_src_apll_gpll_dpll_usb480m_p) = { "apll", "gpll", "dpll"
> "usb480m" }; +
> +PNAME(mux_mmc_src_p) = { "apll", "gpll", "dpll", "xin24m" };
> +PNAME(mux_i2s_pre_p) = { "i2s_src", "i2s_frac", "ext_i2s", "xin12m" };
> +PNAME(mux_i2s_clkout_p) = { "i2s_pre", "xin12m" };
> +PNAME(mux_spdif_p) = { "spdif_src", "spdif_frac", "xin12m" };
> +PNAME(mux_uart0_p) = { "uart0_src", "uart0_frac", "xin24m" };
> +PNAME(mux_uart1_p) = { "uart1_src", "uart1_frac", "xin24m" };
> +PNAME(mux_uart2_p) = { "uart2_src", "uart2_frac", "xin24m" };
> +PNAME(mux_mac_p) = { "mac_pll_src", "ext_gmac" };
> +PNAME(mux_dclk_p) = { "dclk_lcdc", "dclk_hdmi_src" };
> +
> +static struct rockchip_pll_clock rk3036_pll_clks[] __initdata = {
> + [apll] = PLL(pll_rk3036, PLL_APLL, "apll", mux_pll_p, 0,
> RK2928_PLL_CON(0), + RK2928_MODE_CON, 0, 10, 0, rk3036_pll_rates),
> + [dpll] = PLL(pll_rk3036, PLL_DPLL, "dpll", mux_pll_p, 0,
> RK2928_PLL_CON(4), + RK2928_MODE_CON, 4, 10, 0, NULL),
> + [gpll] = PLL(pll_rk3036, PLL_GPLL, "gpll", mux_pll_p, 0,
> RK2928_PLL_CON(12), + RK2928_MODE_CON, 12, 10,
> ROCKCHIP_PLL_SYNC_RATE, rk3036_pll_rates), +};
> +
> +#define MFLAGS CLK_MUX_HIWORD_MASK
> +#define DFLAGS CLK_DIVIDER_HIWORD_MASK
> +#define GFLAGS (CLK_GATE_HIWORD_MASK | CLK_GATE_SET_TO_DISABLE)
> +
> +static struct rockchip_clk_branch rk3036_clk_branches[] __initdata = {
> + /*
> + * Clock-Architecture Diagram 1
> + */
> +
> + /* PD_CORE */
> + GATE(0, "gpll_armclk", "gpll", CLK_IGNORE_UNUSED,
> + RK2928_CLKGATE_CON(0), 6, GFLAGS),
> +
> + /* PD_DDR */
> + GATE(0, "dpll_ddr", "dpll", CLK_IGNORE_UNUSED,
> + RK2928_CLKGATE_CON(0), 2, GFLAGS),
> + GATE(0, "gpll_ddr", "gpll", 0,
> + RK2928_CLKGATE_CON(0), 8, GFLAGS),
> + COMPOSITE_NOGATE(0, "ddrphy2x", mux_ddrphy_p, CLK_IGNORE_UNUSED,
> + RK2928_CLKSEL_CON(26), 8, 1, MFLAGS, 0, 2,
> + DFLAGS | CLK_DIVIDER_POWER_OF_TWO),
please keep the formatting. With the big number of clock definitions, reading
is easier if everything stays in one place without additional line-breaks.
So please move the "DFLAGS | ..." part up into the previous line. (same if
this occures somewhere lese)
> +
> + /* PD_CORE */
> + COMPOSITE_NOMUX(0, "pclk_dbg", "armclk", CLK_IGNORE_UNUSED,
> + RK2928_CLKSEL_CON(1), 0, 4, DFLAGS | CLK_DIVIDER_READ_ONLY,
> + RK2928_CLKGATE_CON(0), 7, GFLAGS),
> + COMPOSITE_NOMUX(0, "aclk_core_pre", "armclk", 0,
> + RK2928_CLKSEL_CON(1), 4, 3, DFLAGS | CLK_DIVIDER_READ_ONLY,
> + RK2928_CLKGATE_CON(0), 7, GFLAGS),
> +
> + /* PD_CPU (BUS) */
> + GATE(0, "dpll_cpu", "dpll", 0, RK2928_CLKGATE_CON(10), 8, GFLAGS),
> + GATE(0, "gpll_cpu", "gpll", 0, RK2928_CLKGATE_CON(0), 1, GFLAGS),
> + COMPOSITE_NOGATE(0, "aclk_cpu_src", mux_busclk_p, 0,
> + RK2928_CLKSEL_CON(0), 14, 2, MFLAGS, 8, 5, DFLAGS),
> + GATE(ACLK_CPU, "aclk_cpu", "aclk_cpu_src", 0, RK2928_CLKGATE_CON(0), 3,
> GFLAGS), + COMPOSITE_NOMUX(PCLK_CPU, "pclk_cpu", "aclk_cpu_src", 0,
> + RK2928_CLKSEL_CON(1), 12, 3, DFLAGS | CLK_DIVIDER_READ_ONLY,
> + RK2928_CLKGATE_CON(0), 5, GFLAGS),
> + COMPOSITE_NOMUX(HCLK_CPU, "hclk_cpu", "aclk_cpu_src", 0,
> + RK2928_CLKSEL_CON(1), 8, 2, DFLAGS | CLK_DIVIDER_READ_ONLY,
> + RK2928_CLKGATE_CON(0), 4, GFLAGS),
> +
> + /* PD_PERI */
> + COMPOSITE(0, "aclk_peri_src", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(10), 14, 2, MFLAGS, 0, 5, DFLAGS,
> + RK2928_CLKGATE_CON(2), 0, GFLAGS),
> +
> + GATE(ACLK_PERI, "aclk_peri", "aclk_peri_src", 0,
> + RK2928_CLKGATE_CON(2), 1, GFLAGS),
> + /* pclk_peri_src is soure for timers */
> + DIV(0, "pclk_peri_src", "aclk_peri_src", CLK_IGNORE_UNUSED,
> + RK2928_CLKSEL_CON(10), 12, 2, DFLAGS |
CLK_DIVIDER_POWER_OF_TWO),
> + GATE(PCLK_PERI, "pclk_peri", "pclk_peri_src", 0,
> + RK2928_CLKGATE_CON(2), 3, GFLAGS),
> + /* hclk_peri_src is soure for sclk_macref_out */
> + DIV(0, "hclk_peri_src", "aclk_peri_src", CLK_IGNORE_UNUSED,
> + RK2928_CLKSEL_CON(10), 8, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO),
> + GATE(HCLK_PERI, "hclk_peri", "hclk_peri_src", 0,
> + RK2928_CLKGATE_CON(2), 2, GFLAGS),
> +
> + /* PD_TIMER */
> + COMPOSITE_NODIV(SCLK_TIMER0, "sclk_timer0", mux_timer_p, 0,
> + RK2928_CLKSEL_CON(2), 4, 1, DFLAGS,
> + RK2928_CLKGATE_CON(1), 0, GFLAGS),
> + COMPOSITE_NODIV(SCLK_TIMER1, "sclk_timer1", mux_timer_p, 0,
> + RK2928_CLKSEL_CON(2), 5, 1, DFLAGS,
> + RK2928_CLKGATE_CON(1), 1, GFLAGS),
> + COMPOSITE_NODIV(SCLK_TIMER2, "sclk_timer2", mux_timer_p, 0,
> + RK2928_CLKSEL_CON(2), 6, 1, DFLAGS,
> + RK2928_CLKGATE_CON(2), 4, GFLAGS),
> + COMPOSITE_NODIV(SCLK_TIMER3, "sclk_timer3", mux_timer_p, 0,
> + RK2928_CLKSEL_CON(2), 7, 1, DFLAGS,
> + RK2928_CLKGATE_CON(2), 5, GFLAGS),
> +
> + /* PD_UART */
> + MUX(0, "uart_pll_clk", mux_pll_src_apll_gpll_dpll_usb480m_p, 0,
> + RK2928_CLKSEL_CON(13), 10, 2, MFLAGS),
> + COMPOSITE_NOMUX(0, "uart0_src", "uart_pll_clk", 0,
> + RK2928_CLKSEL_CON(13), 0, 7, DFLAGS,
> + RK2928_CLKGATE_CON(1), 8, GFLAGS),
> + COMPOSITE_NOMUX(0, "uart1_src", "uart_pll_clk", 0,
> + RK2928_CLKSEL_CON(13), 0, 7, DFLAGS,
> + RK2928_CLKGATE_CON(1), 8, GFLAGS),
> + COMPOSITE_NOMUX(0, "uart2_src", "uart_pll_clk", 0,
> + RK2928_CLKSEL_CON(13), 0, 7, DFLAGS,
> + RK2928_CLKGATE_CON(1), 8, GFLAGS),
> + COMPOSITE_FRAC(0, "uart0_frac", "uart0_src", CLK_SET_RATE_PARENT,
> + RK2928_CLKSEL_CON(17), 0,
> + RK2928_CLKGATE_CON(1), 9, GFLAGS),
> + COMPOSITE_FRAC(0, "uart1_frac", "uart1_src", CLK_SET_RATE_PARENT,
> + RK2928_CLKSEL_CON(18), 0,
> + RK2928_CLKGATE_CON(1), 11, GFLAGS),
> + COMPOSITE_FRAC(0, "uart2_frac", "uart2_src", CLK_SET_RATE_PARENT,
> + RK2928_CLKSEL_CON(19), 0,
> + RK2928_CLKGATE_CON(1), 13, GFLAGS),
> + MUX(SCLK_UART0, "sclk_uart0", mux_uart0_p, CLK_SET_RATE_PARENT,
> + RK2928_CLKSEL_CON(13), 8, 2, MFLAGS),
> + MUX(SCLK_UART1, "sclk_uart1", mux_uart1_p, CLK_SET_RATE_PARENT,
> + RK2928_CLKSEL_CON(14), 8, 2, MFLAGS),
> + MUX(SCLK_UART2, "sclk_uart2", mux_uart2_p, CLK_SET_RATE_PARENT,
> + RK2928_CLKSEL_CON(15), 8, 2, MFLAGS),
> +
> + /* PD_VIDEO */
> + COMPOSITE(0, "aclk_vcodec", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(32), 14, 2, MFLAGS, 8, 5, DFLAGS,
> + RK2928_CLKGATE_CON(3), 11, GFLAGS),
> +
> + COMPOSITE(0, "aclk_hvec", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(20), 0, 2, MFLAGS, 2, 5, DFLAGS,
> + RK2928_CLKGATE_CON(10), 6, GFLAGS),
> +
> + /* PD_VIO */
> + COMPOSITE(0, "aclk_disp1_pre", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(31), 14, 2, MFLAGS, 8, 5, DFLAGS,
> + RK2928_CLKGATE_CON(1), 4, GFLAGS),
> + COMPOSITE(0, "hclk_disp_pre", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(30), 14, 2, MFLAGS, 8, 5, DFLAGS,
> + RK2928_CLKGATE_CON(0), 11, GFLAGS),
> + COMPOSITE(DCLK_LCDC, "dclk_lcdc", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(28), 0, 2, MFLAGS, 8, 8, DFLAGS,
> + RK2928_CLKGATE_CON(3), 2, GFLAGS),
> +
> + /* MMC */
> + COMPOSITE_NODIV(0, "sclk_sdmmc_src", mux_mmc_src_p, 0,
> + RK2928_CLKSEL_CON(12), 8, 2, DFLAGS,
> + RK2928_CLKGATE_CON(2), 11, GFLAGS),
> + DIV(SCLK_SDMMC, "sclk_sdmmc", "sclk_sdmmc_src", 0,
> + RK2928_CLKSEL_CON(11), 0, 7, DFLAGS),
> +
> + COMPOSITE_NODIV(0, "sclk_sdio_src", mux_mmc_src_p, 0,
> + RK2928_CLKSEL_CON(12), 10, 2, DFLAGS,
> + RK2928_CLKGATE_CON(2), 13, GFLAGS),
> + DIV(SCLK_SDIO, "sclk_sdio", "sclk_sdio_src", 0,
> + RK2928_CLKSEL_CON(11), 8, 7, DFLAGS),
> +
> + COMPOSITE(SCLK_EMMC, "sclk_emmc", mux_mmc_src_p, 0,
> + RK2928_CLKSEL_CON(12), 12, 2, MFLAGS, 0, 7, DFLAGS,
> + RK2928_CLKGATE_CON(2), 14, GFLAGS),
> +
> + MMC(SCLK_SDMMC_DRV, "sdmmc_drv", "sclk_sdmmc", RK3036_SDMMC_CON0,
> 1), + MMC(SCLK_SDMMC_SAMPLE, "sdmmc_sample", "sclk_sdmmc",
> RK3036_SDMMC_CON1, 0), +
> + MMC(SCLK_SDIO_DRV, "sdio_drv", "sclk_sdio", RK3036_SDIO_CON0, 1),
> + MMC(SCLK_SDIO_SAMPLE, "sdio_sample", "sclk_sdio", RK3036_SDIO_CON1, 0),
> +
> + MMC(SCLK_EMMC_DRV, "emmc_drv", "sclk_emmc", RK3036_EMMC_CON0,
> 1), + MMC(SCLK_EMMC_SAMPLE, "emmc_sample", "sclk_emmc",
> RK3036_EMMC_CON1, 0), +
> + /* I2S */
> + COMPOSITE(0, "i2s_src", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(3), 14, 1, MFLAGS, 0, 7, DFLAGS,
> + RK2928_CLKGATE_CON(0), 9, GFLAGS),
> + COMPOSITE_FRAC(0, "i2s_frac", "i2s_src", CLK_SET_RATE_PARENT,
> + RK2928_CLKSEL_CON(7), 0,
> + RK2928_CLKGATE_CON(0), 10, GFLAGS),
> + MUX(0, "i2s_pre", mux_i2s_pre_p, CLK_SET_RATE_PARENT,
> + RK2928_CLKSEL_CON(3), 8, 2, MFLAGS),
> + COMPOSITE_NODIV(SCLK_I2S_OUT, "i2s_clkout", mux_i2s_clkout_p, 0,
> + RK2928_CLKSEL_CON(4), 12, 1, MFLAGS,
> + RK2928_CLKGATE_CON(0), 13, GFLAGS),
> + GATE(SCLK_I2S, "sclk_i2s", "i2s_pre", CLK_SET_RATE_PARENT,
> + RK2928_CLKGATE_CON(0), 14, GFLAGS),
> +
> + COMPOSITE(0, "spdif_src", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(5), 10, 2, MFLAGS, 0, 7, DFLAGS,
> + RK2928_CLKGATE_CON(2), 10, GFLAGS),
> + COMPOSITE_FRAC(0, "spdif_frac", "spdif_src", 0,
> + RK2928_CLKSEL_CON(9), 0,
> + RK2928_CLKGATE_CON(2), 12, GFLAGS),
> + MUX(SCLK_SPDIF, "sclk_spdif", mux_spdif_p, 0,
> + RK2928_CLKSEL_CON(5), 8, 2, MFLAGS),
> + /* USB */
> + GATE(0, "hsicphy12m_xin12m", "xin12m", 0,
> + RK2928_CLKGATE_CON(1), 5, GFLAGS),
> +
> + /* GPU */
some of these comments are redundant ... if the clock is already named
sclk_gpu a comment GPU above does not help any :-)
Same for SPI, NANDC and everything else you might find.
> + COMPOSITE(SCLK_GPU, "sclk_gpu", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(34), 8, 2, MFLAGS, 0, 5, DFLAGS,
> + RK2928_CLKGATE_CON(3), 13, GFLAGS),
> +
> + /* SPI */
> + COMPOSITE(SCLK_SPI, "sclk_spi", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(25), 8, 2, MFLAGS, 0, 7, DFLAGS,
> + RK2928_CLKGATE_CON(2), 9, GFLAGS),
> +
> + /* NANDC */
> + COMPOSITE(SCLK_NANDC, "sclk_nandc", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(16), 8, 2, MFLAGS, 10, 5, DFLAGS,
> + RK2928_CLKGATE_CON(10), 4, GFLAGS),
> +
> + /* SFC */
> + COMPOSITE(SCLK_SFC, "sclk_sfc", mux_pll_src_apll_gpll_dpll_usb480m_p, 0,
> + RK2928_CLKSEL_CON(16), 0, 2, MFLAGS, 2, 5, DFLAGS,
> + RK2928_CLKGATE_CON(10), 5, GFLAGS),
> +
> + /* MAC */
> + COMPOSITE_NOGATE(0, "mac_pll_src", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(21), 0, 2, MFLAGS, 4, 5, DFLAGS),
> + /* for clk_mac_ref & clk_mac_refout */
> + MUX(SCLK_MACREF, "mac_clk_ref", mux_mac_p, CLK_SET_RATE_PARENT,
> + RK2928_CLKSEL_CON(21), 3, 1, MFLAGS),
> +
> + COMPOSITE_NOMUX(SCLK_MAC, "mac_clk", "mac_clk_ref", 0,
> + RK2928_CLKSEL_CON(21), 9, 5, DFLAGS,
> + RK2928_CLKGATE_CON(2), 6, GFLAGS),
> +
The hdmi diagram is actually labeled "Clock Architecture Diagram 2"
> + /* HDMI */
> + /* total clks: pin_sys_clk / pin_sck / pin_mclk / pin_vclk /
> pin_vclk_pllref */ + /* the same with dclk_lcdc */
> + COMPOSITE(0, "dclk_hdmi_src", mux_pll_src_3plls_p, 0,
> + RK2928_CLKSEL_CON(28), 0, 2, MFLAGS, 8, 8, DFLAGS,
> + RK2928_CLKGATE_CON(3), 2, GFLAGS),
> + /* hdmi dclk from dclk_lcdc directly */
> + MUX(SCLK_HDMI, "dclk_hdmi", mux_dclk_p, 0,
> + RK2928_CLKSEL_CON(31), 0, 1, MFLAGS),
> +
> + /*
> + * Clock-Architecture Diagram 2
The gates are in Diagram 3 in the RK3036 TRM I have
> + */
> +
> + /* aclk_cpu gates */
> + GATE(0, "sclk_intmem", "aclk_cpu", CLK_IGNORE_UNUSED,
> RK2928_CLKGATE_CON(4), 12, GFLAGS), + GATE(0, "aclk_strc_sys", "aclk_cpu",
> CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 10, GFLAGS), +
> + /* hclk_cpu gates */
> + GATE(HCLK_ROM, "hclk_rom", "hclk_cpu", CLK_IGNORE_UNUSED,
> RK2928_CLKGATE_CON(5), 6, GFLAGS), +
> + /* pclk_cpu gates */
> + GATE(PCLK_GRF, "pclk_grf", "pclk_cpu", 0, RK2928_CLKGATE_CON(5), 4,
> GFLAGS), + GATE(PCLK_DDRUPCTL, "pclk_ddrupctl", "pclk_cpu", 0,
> RK2928_CLKGATE_CON(5), 7, GFLAGS), + GATE(ACLK_VCODEC, "pclk_acodec",
> "pclk_cpu", 0, RK2928_CLKGATE_CON(5), 14, GFLAGS), + GATE(PCLK_HDMI,
> "pclk_hdmi", "pclk_cpu", 0, RK2928_CLKGATE_CON(3), 8, GFLAGS), +
> + /* aclk_vio gates */
> + GATE(ACLK_VIO, "aclk_vio", "aclk_disp1_pre", 0,
> + RK2928_CLKGATE_CON(6), 13, GFLAGS),
> + GATE(ACLK_LCDC, "aclk_lcdc", "aclk_disp1_pre", 0,
> + RK2928_CLKGATE_CON(9), 6, GFLAGS),
> +
> + GATE(HCLK_VIO_BUS, "hclk_vio_bus", "hclk_disp_pre", 0,
> + RK2928_CLKGATE_CON(6), 12, GFLAGS),
> + GATE(HCLK_LCDC, "hclk_lcdc", "hclk_disp_pre", 0,
> + RK2928_CLKGATE_CON(9), 5, GFLAGS),
> +
> + /* aclk_video gates */
> + GATE(HCLK_LCDC, "hclk_vcodec", "hclk_disp_pre", 0,
> + RK2928_CLKGATE_CON(3), 12, GFLAGS),
> +
> + /* xin24m gates */
> + GATE(SCLK_PVTM_CORE, "sclk_pvtm_core", "xin24m", 0,
> RK2928_CLKGATE_CON(10), 0, GFLAGS), + GATE(SCLK_PVTM_GPU, "sclk_pvtm_gpu",
> "xin24m", 0, RK2928_CLKGATE_CON(10), 1, GFLAGS), +
> + /* aclk_peri gates */
> + GATE(0, "aclk_peri_axi_matrix", "aclk_peri", CLK_IGNORE_UNUSED,
> RK2928_CLKGATE_CON(4), 3, GFLAGS), + GATE(0, "aclk_cpu_peri", "aclk_peri",
> CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 2, GFLAGS), + GATE(ACLK_DMAC2,
> "aclk_dmac2", "aclk_peri", 0, RK2928_CLKGATE_CON(5), 1, GFLAGS), + GATE(0,
> "aclk_peri_niu", "aclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(9), 15,
> GFLAGS), +
> + /* hclk_peri gates */
> + GATE(0, "hclk_peri_matrix", "hclk_peri", CLK_IGNORE_UNUSED,
> RK2928_CLKGATE_CON(4), 0, GFLAGS), + GATE(0, "hclk_usb_peri", "hclk_peri",
> CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(9), 13, GFLAGS), + GATE(0,
> "hclk_peri_arbi", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(9),
> 14, GFLAGS), + GATE(HCLK_NANDC, "hclk_nandc", "hclk_peri", 0,
> RK2928_CLKGATE_CON(5), 9, GFLAGS), + GATE(HCLK_SDMMC, "hclk_sdmmc",
> "hclk_peri", 0, RK2928_CLKGATE_CON(5), 10, GFLAGS), + GATE(HCLK_SDIO,
> "hclk_sdio", "hclk_peri", 0, RK2928_CLKGATE_CON(5), 11, GFLAGS),
> + GATE(HCLK_EMMC, "hclk_emmc", "hclk_peri", 0, RK2928_CLKGATE_CON(7), 0,
> GFLAGS), + GATE(HCLK_OTG0, "hclk_otg0", "hclk_peri", CLK_IGNORE_UNUSED,
> RK2928_CLKGATE_CON(5), 13, GFLAGS), + GATE(HCLK_OTG1, "hclk_otg1",
> "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(7), 13, GFLAGS),
> + GATE(HCLK_I2S, "hclk_i2s", "hclk_peri", CLK_IGNORE_UNUSED,
> RK2928_CLKGATE_CON(7), 2, GFLAGS), + GATE(0, "hclk_sfc", "hclk_peri",
> CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(3), 14, GFLAGS), + GATE(0,
> "hclk_mac", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(3), 15,
> GFLAGS), +
> + /* pclk_peri gates */
> + GATE(0, "pclk_peri_matrix", "pclk_peri", CLK_IGNORE_UNUSED,
> RK2928_CLKGATE_CON(4), 1, GFLAGS), + GATE(0, "pclk_efuse", "pclk_peri",
> CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(5), 2, GFLAGS), + GATE(PCLK_TIMER,
> "pclk_timer0", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 7, GFLAGS),
> + GATE(PCLK_PWM, "pclk_pwm", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 10,
> GFLAGS), + GATE(PCLK_SPI, "pclk_spi", "pclk_peri", 0,
> RK2928_CLKGATE_CON(7), 12, GFLAGS), + GATE(PCLK_WDT, "pclk_wdt",
> "pclk_peri", 0, RK2928_CLKGATE_CON(7), 15, GFLAGS), + GATE(PCLK_UART0,
> "pclk_uart0", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 0, GFLAGS),
> + GATE(PCLK_UART1, "pclk_uart1", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 1,
> GFLAGS), + GATE(PCLK_UART2, "pclk_uart2", "pclk_peri", 0,
> RK2928_CLKGATE_CON(8), 2, GFLAGS), + GATE(PCLK_I2C0, "pclk_i2c0",
> "pclk_peri", 0, RK2928_CLKGATE_CON(8), 4, GFLAGS), + GATE(PCLK_I2C1,
> "pclk_i2c1", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 5, GFLAGS),
> + GATE(PCLK_I2C2, "pclk_i2c2", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 6,
> GFLAGS), + GATE(PCLK_GPIO0, "pclk_gpio0", "pclk_peri", 0,
> RK2928_CLKGATE_CON(8), 9, GFLAGS), + GATE(PCLK_GPIO1, "pclk_gpio1",
> "pclk_peri", 0, RK2928_CLKGATE_CON(8), 10, GFLAGS), + GATE(PCLK_GPIO2,
> "pclk_gpio2", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 11, GFLAGS), +};
> +
> +static const char *const rk3036_critical_clocks[] __initconst = {
> + "aclk_cpu",
> + "aclk_peri",
> + "hclk_peri",
> +};
> +
> +#ifdef CONFIG_PM_SLEEP
> +static void __iomem *rk3036_cru_base;
> +
> +/* Some CRU registers will be reset in maskrom when the system
> + * wakes up from fastboot.
> + * So save them before suspend, restore them after resume.
> + */
> +
> +static int rk3036_clk_suspend(void)
> +{
> + /* TODO */
> +
> + return 0;
> +}
> +
> +static void rk3036_clk_resume(void)
> +{
> + /* TODO */
> +}
> +
> +static struct syscore_ops rk3036_clk_syscore_ops = {
> + .suspend = rk3036_clk_suspend,
> + .resume = rk3036_clk_resume,
> +};
> +
> +static void rk3036_clk_sleep_init(void __iomem *reg_base)
> +{
> + rk3036_cru_base = reg_base;
> + register_syscore_ops(&rk3036_clk_syscore_ops);
> +}
> +
> +#else /* CONFIG_PM_SLEEP */
> +static void rk3036_clk_sleep_init(void __iomem *reg_base) {}
> +#endif
please don't add empty "TODO" functions. If you want to work on suspend later,
just leave this stuff out completely and add it when time comes.
> +
> +static void __init rk3036_clk_init(struct device_node *np)
> +{
> + void __iomem *reg_base;
> + struct clk *clk;
> +
> + reg_base = of_iomap(np, 0);
> + if (!reg_base) {
> + pr_err("%s: could not map cru region\n", __func__);
> + return;
> + }
> +
> + rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
> +
> + /* xin12m is created by an cru-internal divider */
> + clk = clk_register_fixed_factor(NULL, "xin12m", "xin24m", 0, 1, 2);
> + if (IS_ERR(clk))
> + pr_warn("%s: could not register clock xin12m: %ld\n",
> + __func__, PTR_ERR(clk));
> +
> + clk = clk_register_fixed_factor(NULL, "usb480m", "xin24m", 0, 20, 1);
> + if (IS_ERR(clk))
> + pr_warn("%s: could not register clock usb480m: %ld\n",
> + __func__, PTR_ERR(clk));
> +
> + clk = clk_register_fixed_factor(NULL, "ddrphy", "ddrphy2x", 0, 1, 2);
> + if (IS_ERR(clk))
> + pr_warn("%s: could not register clock ddrphy: %ld\n",
> + __func__, PTR_ERR(clk));
> +
> + clk = clk_register_fixed_factor(NULL, "hclk_vcodec_pre",
> + "aclk_vcodec", 0, 1, 4);
> + if (IS_ERR(clk))
> + pr_warn("%s: could not register clock hclk_vcodec_pre: %ld\n",
> + __func__, PTR_ERR(clk));
> +
> + clk = clk_register_fixed_factor(NULL, "sclk_macref_out",
> + "hclk_peri_src", 0, 1, 2);
> + if (IS_ERR(clk))
> + pr_warn("%s: could not register clock sclk_macref_out: %ld\n",
> + __func__, PTR_ERR(clk));
> +
> + rockchip_clk_register_plls(rk3036_pll_clks,
> + ARRAY_SIZE(rk3036_pll_clks),
> + -1);
> + rockchip_clk_register_branches(rk3036_clk_branches,
> + ARRAY_SIZE(rk3036_clk_branches));
> + rockchip_clk_protect_critical(rk3036_critical_clocks,
> + ARRAY_SIZE(rk3036_critical_clocks));
> +
> + rockchip_clk_register_armclk(ARMCLK, "armclk",
> + mux_armclk_p, ARRAY_SIZE(mux_armclk_p),
> + &rk3036_cpuclk_data, rk3036_cpuclk_rates,
> + ARRAY_SIZE(rk3036_cpuclk_rates));
> +
> + rockchip_register_softrst(np, 9, reg_base + RK2928_SOFTRST_CON(0),
> + ROCKCHIP_SOFTRST_HIWORD_MASK);
> +
> + rockchip_register_restart_notifier(RK2928_GLB_SRST_FST);
> + rk3036_clk_sleep_init(reg_base);
> +}
> +CLK_OF_DECLARE(rk3036_cru, "rockchip,rk3036-cru", rk3036_clk_init);
> diff --git a/drivers/clk/rockchip/clk.h b/drivers/clk/rockchip/clk.h
> index dc8ecb2..6603c07 100644
> --- a/drivers/clk/rockchip/clk.h
> +++ b/drivers/clk/rockchip/clk.h
> @@ -2,6 +2,9 @@
> * Copyright (c) 2014 MundoReader S.L.
> * Author: Heiko Stuebner <heiko at sntech.de>
> *
> + * Copyright (c) 2015 Rockchip Electronics Co. Ltd.
> + * Author: Xing Zheng <zhengxing at rock-chips.com>
> + *
> * based on
> *
> * samsung/clk.h
> @@ -40,6 +43,13 @@ struct clk;
> #define RK2928_SOFTRST_CON(x) ((x) * 0x4 + 0x110)
> #define RK2928_MISC_CON 0x134
>
> +#define RK3036_SDMMC_CON0 0x144
> +#define RK3036_SDMMC_CON1 0x148
> +#define RK3036_SDIO_CON0 0x14c
> +#define RK3036_SDIO_CON1 0x150
> +#define RK3036_EMMC_CON0 0x154
> +#define RK3036_EMMC_CON1 0x158
> +
> #define RK3288_PLL_CON(x) RK2928_PLL_CON(x)
> #define RK3288_MODE_CON 0x50
> #define RK3288_CLKSEL_CON(x) ((x) * 0x4 + 0x60)
> @@ -75,6 +85,7 @@ struct clk;
>
> enum rockchip_pll_type {
> pll_rk3066,
> + pll_rk3036,
> };
>
> #define RK3066_PLL_RATE(_rate, _nr, _nf, _no) \
> @@ -95,12 +106,31 @@ enum rockchip_pll_type {
> .nb = _nb, \
> }
>
> +#define RK3036_PLL_RATE(_rate, _refdiv, _fbdiv, _postdiv1, \
> + _postdiv2, _dsmpd, _frac) \
> +{ \
> + .rate = _rate##U, \
> + .fbdiv = _fbdiv, \
> + .postdiv1 = _postdiv1, \
> + .refdiv = _refdiv, \
> + .postdiv2 = _postdiv2, \
> + .dsmpd = _dsmpd, \
> + .frac = _frac, \
> +}
> +
> struct rockchip_pll_rate_table {
> unsigned long rate;
> unsigned int nr;
> unsigned int nf;
> unsigned int no;
> unsigned int nb;
> + /* for RK3036 */
> + unsigned int fbdiv;
> + unsigned int postdiv1;
> + unsigned int refdiv;
> + unsigned int postdiv2;
> + unsigned int dsmpd;
> + unsigned int frac;
> };
>
> /**
> diff --git a/include/dt-bindings/clock/rk3036-cru.h
> b/include/dt-bindings/clock/rk3036-cru.h new file mode 100644
> index 0000000..085e4c3
> --- /dev/null
> +++ b/include/dt-bindings/clock/rk3036-cru.h
> @@ -0,0 +1,247 @@
> +/*
> + * Copyright (c) 2014 MundoReader S.L.
> + * Author: Heiko Stuebner <heiko at sntech.de>
> + *
> + * Copyright (c) 2015 Rockchip Electronics Co. Ltd.
> + * Author: Xing Zheng <zhengxing at rock-chips.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +/* core clocks */
> +#define PLL_APLL 1
> +#define PLL_DPLL 2
> +#define PLL_GPLL 3
> +#define ARMCLK 4
> +
> +/* sclk gates (special clocks) */
> +#define SCLK_GPU 64
> +#define SCLK_SPI 65
> +#define SCLK_SDMMC 68
> +#define SCLK_SDIO 69
> +#define SCLK_EMMC 71
> +#define SCLK_NANDC 76
> +#define SCLK_UART0 77
> +#define SCLK_UART1 78
> +#define SCLK_UART2 79
> +#define SCLK_I2S 82
> +#define SCLK_SPDIF 83
> +#define SCLK_TIMER0 85
> +#define SCLK_TIMER1 86
> +#define SCLK_TIMER2 87
> +#define SCLK_TIMER3 88
> +#define SCLK_OTGPHY0 93
> +#define SCLK_OTGPHY1 94
> +#define SCLK_LCDC 100
> +#define SCLK_HDMI 109
> +#define SCLK_HEVC 111
> +#define SCLK_I2S_OUT 113
> +#define SCLK_SDMMC_DRV 114
> +#define SCLK_SDIO_DRV 115
> +#define SCLK_EMMC_DRV 117
> +#define SCLK_SDMMC_SAMPLE 118
> +#define SCLK_SDIO_SAMPLE 119
> +#define SCLK_EMMC_SAMPLE 121
> +#define SCLK_PVTM_CORE 123
> +#define SCLK_PVTM_GPU 124
> +#define SCLK_PVTM_VIDEO 125
> +#define SCLK_MAC 151
> +#define SCLK_MACREF 152
> +#define SCLK_SFC 160
> +
> +#define DCLK_LCDC 190
> +
> +/* aclk gates */
> +#define ACLK_DMAC2 194
> +#define ACLK_LCDC 197
> +#define ACLK_VIO 203
> +#define ACLK_VCODEC 208
> +#define ACLK_CPU 209
> +#define ACLK_PERI 210
> +
> +/* pclk gates */
> +#define PCLK_GPIO0 320
> +#define PCLK_GPIO1 321
> +#define PCLK_GPIO2 322
> +#define PCLK_GRF 329
> +#define PCLK_I2C0 332
> +#define PCLK_I2C1 333
> +#define PCLK_I2C2 334
> +#define PCLK_SPI 338
> +#define PCLK_UART0 341
> +#define PCLK_UART1 342
> +#define PCLK_UART2 343
> +#define PCLK_PWM 350
> +#define PCLK_TIMER 353
> +#define PCLK_HDMI 360
> +#define PCLK_CPU 362
> +#define PCLK_PERI 363
> +#define PCLK_DDRUPCTL 364
> +#define PCLK_WDT 368
> +
> +/* hclk gates */
> +#define HCLK_OTG0 449
> +#define HCLK_OTG1 450
> +#define HCLK_NANDC 453
> +#define HCLK_SDMMC 456
> +#define HCLK_SDIO 457
> +#define HCLK_EMMC 459
> +#define HCLK_I2S 462
> +#define HCLK_LCDC 465
> +#define HCLK_ROM 467
> +#define HCLK_VIO_BUS 472
> +#define HCLK_VCODEC 476
> +#define HCLK_CPU 477
> +#define HCLK_PERI 478
> +
> +#define CLK_NR_CLKS (HCLK_PERI + 1)
> +
> +/* soft-reset indices */
> +#define SRST_CORE0 0
> +#define SRST_CORE1 1
> +#define SRST_0RES2 2
> +#define SRST_0RES3 3
> +#define SRST_CORE0_DBG 4
> +#define SRST_CORE1_DBG 5
> +#define SRST_0RES6 6
> +#define SRST_0RES7 7
> +#define SRST_CORE0_POR 8
> +#define SRST_CORE1_POR 9
> +#define SRST_0RES10 10
> +#define SRST_0RES11 11
> +#define SRST_L2C 12
> +#define SRST_TOPDBG 13
> +#define SRST_STRC_SYS_A 14
> +#define SRST_PD_CORE_NIU 15
> +
> +#define SRST_TIMER2 16
> +#define SRST_CPUSYS_H 17
> +#define SRST_1RES2 18
> +#define SRST_AHB2APB_H 19
> +#define SRST_TIMER3 20
> +#define SRST_INTMEM 21
> +#define SRST_ROM 22
> +#define SRST_PERI_NIU 23
> +#define SRST_I2S 24
> +#define SRST_DDR_PLL 25
> +#define SRST_GPU_DLL 26
> +#define SRST_TIMER0 27
> +#define SRST_TIMER1 28
> +#define SRST_CORE_DLL 29
> +#define SRST_EFUSE_P 30
> +#define SRST_ACODEC_P 31
> +
> +#define SRST_GPIO0 32
> +#define SRST_GPIO1 33
> +#define SRST_GPIO2 34
> +#define SRST_2RES3 35
> +#define SRST_2RES4 36
> +#define SRST_2RES5 37
> +#define SRST_2RES6 38
> +#define SRST_UART0 39
> +#define SRST_UART1 40
> +#define SRST_UART2 41
> +#define SRST_2RES10 42
> +#define SRST_I2C0 43
> +#define SRST_I2C1 44
> +#define SRST_I2C2 45
> +#define SRST_2RES14 46
> +#define SRST_SFC 47
> +
> +#define SRST_PWM0 48
> +#define SRST_3RES1 49
> +#define SRST_3RES2 50
> +#define SRST_DAP 51
> +#define SRST_DAP_SYS 52
> +#define SRST_3RES5 53
> +#define SRST_3RES6 54
> +#define SRST_GRF 55
> +#define SRST_3RES8 56
> +#define SRST_PERIPHSYS_A 57
> +#define SRST_PERIPHSYS_H 58
> +#define SRST_PERIPHSYS_P 59
> +#define SRST_3RES12 60
> +#define SRST_CPU_PERI 61
> +#define SRST_EMEM_PERI 62
> +#define SRST_USB_PERI 63
> +
> +#define SRST_DMA2 64
> +#define SRST_4RES1 65
> +#define SRST_MAC 66
> +#define SRST_4RES3 67
> +#define SRST_NANDC 68
> +#define SRST_USBOTG0 69
> +#define SRST_4RES6 70
> +#define SRST_OTGC0 71
> +#define SRST_USBOTG1 72
> +#define SRST_4RES9 73
> +#define SRST_OTGC1 74
> +#define SRST_4RES11 75
> +#define SRST_4RES12 76
> +#define SRST_4RES13 77
> +#define SRST_4RES14 78
> +#define SRST_DDRMSCH 79
> +
> +#define SRST_5RES0 80
> +#define SRST_MMC0 81
> +#define SRST_SDIO 82
> +#define SRST_EMMC 83
> +#define SRST_SPI0 84
> +#define SRST_5RES5 85
> +#define SRST_WDT 86
> +#define SRST_5RES7 87
> +#define SRST_DDRPHY 88
> +#define SRST_DDRPHY_P 89
> +#define SRST_DDRCTRL 90
> +#define SRST_DDRCTRL_P 91
> +#define SRST_5RES12 92
> +#define SRST_5RES13 93
> +#define SRST_5RES14 94
> +#define SRST_5RES15 95
> +
> +#define SRST_HDMI_P 96
> +#define SRST_6RES1 97
> +#define SRST_6RES2 98
> +#define SRST_VIO_BUS_H 99
> +#define SRST_6RES4 100
> +#define SRST_6RES5 101
> +#define SRST_6RES6 102
> +#define SRST_UTMI0 103
> +#define SRST_UTMI1 104
> +#define SRST_USBPOR 105
> +#define SRST_6RES10 106
> +#define SRST_6RES11 107
> +#define SRST_6RES12 108
> +#define SRST_6RES13 109
> +#define SRST_6RES14 110
> +#define SRST_6RES15 111
> +
> +#define SRST_VCODEC_A 112
> +#define SRST_VCODEC_H 113
> +#define SRST_VIO1_A 114
> +#define SRST_HEVC 115
> +#define SRST_VCODEC_NIU_A 116
> +#define SRST_LCDC1_A 117
> +#define SRST_LCDC1_H 118
> +#define SRST_LCDC1_D 119
> +#define SRST_GPU 120
> +#define SRST_7RES9 121
> +#define SRST_GPU_NIU_A 122
> +#define SRST_7RES11 123
> +#define SRST_7RES12 124
> +#define SRST_7RES13 125
> +#define SRST_7RES14 126
> +#define SRST_7RES15 127
please don't add reserved (aka unused) reset slots. Of course the numbering
stays the same, so just drop the xRESy lines from the definition.
Same for all xRESy entries in this file.
> +
> +#define SRST_8RES0 128
> +#define SRST_8RES1 129
> +#define SRST_8RES2 130
> +#define SRST_DBG_P 131
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