[PATCH V3 3/5] clk: mmp: add clock definition for pxa910
Chao Xie
xiechao.mail at gmail.com
Wed Aug 15 23:08:43 EDT 2012
From: Chao Xie <chao.xie at marvell.com>
Initialize the clocks for pxa910
Signed-off-by: Chao Xie <xiechao.mail at gmail.com>
---
drivers/clk/mmp/Makefile | 1 +
drivers/clk/mmp/clk-pxa910.c | 380 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 381 insertions(+), 0 deletions(-)
create mode 100644 drivers/clk/mmp/clk-pxa910.c
diff --git a/drivers/clk/mmp/Makefile b/drivers/clk/mmp/Makefile
index a0e69ed..6160ac2 100644
--- a/drivers/clk/mmp/Makefile
+++ b/drivers/clk/mmp/Makefile
@@ -5,3 +5,4 @@
obj-y += clk-apbc.o clk-apmu.o clk-frac.o
obj-$(CONFIG_CPU_PXA168) += clk-pxa168.o
+obj-$(CONFIG_CPU_PXA910) += clk-pxa910.o
diff --git a/drivers/clk/mmp/clk-pxa910.c b/drivers/clk/mmp/clk-pxa910.c
new file mode 100644
index 0000000..6f121e7
--- /dev/null
+++ b/drivers/clk/mmp/clk-pxa910.c
@@ -0,0 +1,380 @@
+/*
+ * pxa910 clock framework source file
+ *
+ * Copyright (C) 2012 Marvell
+ * Chao Xie <xiechao.mail at gmail.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+
+#include <mach/addr-map.h>
+
+#include "clk.h"
+
+#define APBC_RTC 0x28
+#define APBC_TWSI0 0x2c
+#define APBC_KPC 0x18
+#define APBC_UART0 0x0
+#define APBC_UART1 0x4
+#define APBC_GPIO 0x8
+#define APBC_PWM0 0xc
+#define APBC_PWM1 0x10
+#define APBC_PWM2 0x14
+#define APBC_PWM3 0x18
+#define APBC_SSP0 0x1c
+#define APBC_SSP1 0x20
+#define APBC_SSP2 0x4c
+#define APBCP_TWSI1 0x28
+#define APBCP_UART2 0x1c
+#define APMU_SDH0 0x54
+#define APMU_SDH1 0x58
+#define APMU_USB 0x5c
+#define APMU_DISP0 0x4c
+#define APMU_CCIC0 0x50
+#define APMU_DFC 0x60
+#define MPMU_UART_PLL 0x14
+
+static DEFINE_SPINLOCK(clk_lock);
+
+enum {
+ clk32, vctcxo, pll1, pll1_2, pll1_4, pll1_8, pll1_16, pll1_6, pll1_12,
+ pll1_24, pll1_48, pll1_96, pll1_13, pll1_13_1_5, pll1_2_1_5,
+ pll1_3_16, uart_pll, twsi0, twsi1, gpio, kpc, rtc, pwm0, pwm1, pwm2,
+ pwm3, uart0_mux, uart0, uart1_mux, uart1, uart2_mux, uart2,
+ ssp0_mux, ssp0, ssp1_mux, ssp1, dfc, sdh0_mux, sdh0, sdh1_mux, sdh1,
+ usb, sph, disp0_mux, disp0, ccic0_mux, ccic0, ccic0_phy_mux,
+ ccic0_phy, ccic0_sphy_div, ccic0_sphy, clk_max
+};
+
+static struct clk_factor_masks uart_factor_masks = {
+ .factor = 2,
+ .num_mask = 0x1fff,
+ .den_mask = 0x1fff,
+ .num_shift = 16,
+ .den_shift = 0,
+};
+
+static struct clk_factor_tbl uart_factor_tbl[] = {
+ {.num = 8125, .den = 1536}, /*14.745MHZ */
+};
+
+static const char *uart_parent[] = {"pll1_3_16", "uart_pll"};
+static const char *ssp_parent[] =
+ {"pll1_96", "pll1_48", "pll1_24", "pll1_12"};
+static const char *sdh_parent[] = {"pll1_12", "pll1_13"};
+static const char *disp_parent[] = {"pll1_2", "pll1_12"};
+static const char *ccic_parent[] = {"pll1_2", "pll1_12"};
+static const char *ccic_phy_parent[] = {"pll1_6", "pll1_12"};
+
+void __init pxa910_clk_init(void)
+{
+ struct clk *clocks[clk_max];
+ void __iomem *mpmu_base;
+ void __iomem *apmu_base;
+ void __iomem *apbcp_base;
+ void __iomem *apbc_base;
+
+ mpmu_base = ioremap(APB_PHYS_BASE + 0x50000, SZ_4K);
+ if (mpmu_base == NULL) {
+ pr_err("error to ioremap MPMU base\n");
+ return;
+ }
+
+ apmu_base = ioremap(AXI_PHYS_BASE + 0x82800, SZ_4K);
+ if (apmu_base == NULL) {
+ pr_err("error to ioremap APMU base\n");
+ return;
+ }
+
+ apbcp_base = ioremap(APB_PHYS_BASE + 0x3b000, SZ_4K);
+ if (apbcp_base == NULL) {
+ pr_err("error to ioremap APBC extension base\n");
+ return;
+ }
+
+ apbc_base = ioremap(APB_PHYS_BASE + 0x15000, SZ_4K);
+ if (apbc_base == NULL) {
+ pr_err("error to ioremap APBC base\n");
+ return;
+ }
+
+ clocks[clk32] =
+ clk_register_fixed_rate(NULL, "clk32", NULL, CLK_IS_ROOT, 3200);
+ clk_register_clkdev(clocks[clk32], "clk32", NULL);
+
+ clocks[vctcxo] =
+ clk_register_fixed_rate(NULL, "vctcxo", NULL, CLK_IS_ROOT,
+ 26000000);
+ clk_register_clkdev(clocks[vctcxo], "vctcxo", NULL);
+
+ clocks[pll1] =
+ clk_register_fixed_rate(NULL, "pll1", NULL, CLK_IS_ROOT, 624000000);
+ clk_register_clkdev(clocks[pll1], "pll1", NULL);
+
+ clocks[pll1_2] =
+ clk_register_fixed_factor(NULL, "pll1_2", "pll1",
+ CLK_SET_RATE_PARENT, 1, 2);
+ clk_register_clkdev(clocks[pll1_2], "pll1_2", NULL);
+
+ clocks[pll1_4] =
+ clk_register_fixed_factor(NULL, "pll1_4", "pll1_2",
+ CLK_SET_RATE_PARENT, 1, 2);
+ clk_register_clkdev(clocks[pll1_4], "pll1_4", NULL);
+
+ clocks[pll1_8] =
+ clk_register_fixed_factor(NULL, "pll1_8", "pll1_4",
+ CLK_SET_RATE_PARENT, 1, 2);
+ clk_register_clkdev(clocks[pll1_8], "pll1_8", NULL);
+
+ clocks[pll1_16] =
+ clk_register_fixed_factor(NULL, "pll1_16", "pll1_8",
+ CLK_SET_RATE_PARENT, 1, 2);
+ clk_register_clkdev(clocks[pll1_16], "pll1_16", NULL);
+
+ clocks[pll1_6] =
+ clk_register_fixed_factor(NULL, "pll1_6", "pll1_2",
+ CLK_SET_RATE_PARENT, 1, 3);
+ clk_register_clkdev(clocks[pll1_6], "pll1_6", NULL);
+
+ clocks[pll1_12] =
+ clk_register_fixed_factor(NULL, "pll1_12", "pll1_6",
+ CLK_SET_RATE_PARENT, 1, 2);
+ clk_register_clkdev(clocks[pll1_12], "pll1_12", NULL);
+
+ clocks[pll1_24] =
+ clk_register_fixed_factor(NULL, "pll1_24", "pll1_12",
+ CLK_SET_RATE_PARENT, 1, 2);
+ clk_register_clkdev(clocks[pll1_24], "pll1_24", NULL);
+
+ clocks[pll1_48] =
+ clk_register_fixed_factor(NULL, "pll1_48", "pll1_24",
+ CLK_SET_RATE_PARENT, 1, 2);
+ clk_register_clkdev(clocks[pll1_48], "pll1_48", NULL);
+
+ clocks[pll1_96] =
+ clk_register_fixed_factor(NULL, "pll1_96", "pll1_48",
+ CLK_SET_RATE_PARENT, 1, 2);
+ clk_register_clkdev(clocks[pll1_96], "pll1_96", NULL);
+
+ clocks[pll1_13] =
+ clk_register_fixed_factor(NULL, "pll1_13", "pll1",
+ CLK_SET_RATE_PARENT, 1, 13);
+ clk_register_clkdev(clocks[pll1_13], "pll1_13", NULL);
+
+ clocks[pll1_13_1_5] =
+ clk_register_fixed_factor(NULL, "pll1_13_1_5", "pll1",
+ CLK_SET_RATE_PARENT, 2, 3);
+ clk_register_clkdev(clocks[pll1_13_1_5], "pll1_13_1_5", NULL);
+
+ clocks[pll1_2_1_5] =
+ clk_register_fixed_factor(NULL, "pll1_2_1_5", "pll1",
+ CLK_SET_RATE_PARENT, 2, 3);
+ clk_register_clkdev(clocks[pll1_2_1_5], "pll1_2_1_5", NULL);
+
+ clocks[pll1_3_16] =
+ clk_register_fixed_factor(NULL, "pll1_3_16", "pll1",
+ CLK_SET_RATE_PARENT, 3, 16);
+ clk_register_clkdev(clocks[pll1_3_16], "pll1_3_16", NULL);
+
+ clocks[uart_pll] =
+ mmp_clk_register_factor("uart_pll", "pll1_4", 0,
+ mpmu_base + MPMU_UART_PLL,
+ &uart_factor_masks, uart_factor_tbl,
+ ARRAY_SIZE(uart_factor_tbl));
+ clk_set_rate(clocks[uart_pll], 14745600);
+ clk_register_clkdev(clocks[uart_pll], "uart_pll", NULL);
+
+ clocks[twsi0] =
+ mmp_clk_register_apbc("twsi0", "pll1_13_1_5",
+ apbc_base + APBC_TWSI0, 10, 0, &clk_lock);
+ clk_register_clkdev(clocks[twsi0], NULL, "pxa2xx-i2c.0");
+
+ clocks[twsi1] =
+ mmp_clk_register_apbc("twsi1", "pll1_13_1_5",
+ apbcp_base + APBCP_TWSI1, 10, 0, &clk_lock);
+ clk_register_clkdev(clocks[twsi1], NULL, "pxa2xx-i2c.1");
+
+ clocks[gpio] =
+ mmp_clk_register_apbc("gpio", "vctcxo", apbc_base + APBC_GPIO, 10,
+ 0, &clk_lock);
+ clk_register_clkdev(clocks[gpio], NULL, "pxa-gpio");
+
+ clocks[kpc] =
+ mmp_clk_register_apbc("kpc", "clk32", apbc_base + APBC_KPC, 10, 0,
+ &clk_lock);
+ clk_register_clkdev(clocks[kpc], NULL, "pxa27x-keypad");
+
+ clocks[rtc] =
+ mmp_clk_register_apbc("rtc", "clk32", apbc_base + APBC_RTC, 10, 0,
+ &clk_lock);
+ clk_register_clkdev(clocks[rtc], NULL, "sa1100-rtc");
+
+ clocks[pwm0] =
+ mmp_clk_register_apbc("pwm0", "pll1_48", apbc_base + APBC_PWM0, 10,
+ 0, &clk_lock);
+ clk_register_clkdev(clocks[pwm0], NULL, "pxa910-pwm.0");
+
+ clocks[pwm1] =
+ mmp_clk_register_apbc("pwm1", "pll1_48", apbc_base + APBC_PWM1, 10,
+ 0, &clk_lock);
+ clk_register_clkdev(clocks[pwm1], NULL, "pxa910-pwm.1");
+
+ clocks[pwm2] =
+ mmp_clk_register_apbc("pwm2", "pll1_48", apbc_base + APBC_PWM2, 10,
+ 0, &clk_lock);
+ clk_register_clkdev(clocks[pwm2], NULL, "pxa910-pwm.2");
+
+ clocks[pwm3] =
+ mmp_clk_register_apbc("pwm3", "pll1_48", apbc_base + APBC_PWM3, 10,
+ 0, &clk_lock);
+ clk_register_clkdev(clocks[pwm3], NULL, "pxa910-pwm.3");
+
+ clocks[uart0_mux] =
+ clk_register_mux(NULL, "uart0_mux", uart_parent,
+ ARRAY_SIZE(uart_parent), CLK_SET_RATE_PARENT,
+ apbc_base + APBC_UART0, 4, 3, 0, &clk_lock);
+ clk_set_parent(clocks[uart0_mux], clocks[uart_pll]);
+ clk_register_clkdev(clocks[uart0_mux], "uart_mux.0", NULL);
+
+ clocks[uart0] =
+ mmp_clk_register_apbc("uart0", "uart0_mux", apbc_base + APBC_UART0,
+ 10, 0, &clk_lock);
+ clk_register_clkdev(clocks[uart0], NULL, "pxa2xx-uart.0");
+
+ clocks[uart1_mux] =
+ clk_register_mux(NULL, "uart1_mux", uart_parent,
+ ARRAY_SIZE(uart_parent), CLK_SET_RATE_PARENT,
+ apbc_base + APBC_UART1, 4, 3, 0, &clk_lock);
+ clk_set_parent(clocks[uart1_mux], clocks[uart_pll]);
+ clk_register_clkdev(clocks[uart1_mux], "uart_mux.1", NULL);
+
+ clocks[uart1] =
+ mmp_clk_register_apbc("uart1", "uart1_mux", apbc_base + APBC_UART1,
+ 10, 0, &clk_lock);
+ clk_register_clkdev(clocks[uart1], NULL, "pxa2xx-uart.1");
+
+ clocks[uart2_mux] =
+ clk_register_mux(NULL, "uart2_mux", uart_parent,
+ ARRAY_SIZE(uart_parent), CLK_SET_RATE_PARENT,
+ apbcp_base + APBCP_UART2, 4, 3, 0, &clk_lock);
+ clk_set_parent(clocks[uart2_mux], clocks[uart_pll]);
+ clk_register_clkdev(clocks[uart2_mux], "uart_mux.2", NULL);
+
+ clocks[uart2] =
+ mmp_clk_register_apbc("uart2", "uart2_mux",
+ apbcp_base + APBCP_UART2, 10, 0, &clk_lock);
+ clk_register_clkdev(clocks[uart2], NULL, "pxa2xx-uart.2");
+
+ clocks[ssp0_mux] =
+ clk_register_mux(NULL, "ssp0_mux", ssp_parent,
+ ARRAY_SIZE(ssp_parent), CLK_SET_RATE_PARENT,
+ apbc_base + APBC_SSP0, 4, 3, 0, &clk_lock);
+ clk_register_clkdev(clocks[ssp0_mux], "uart_mux.0", NULL);
+
+ clocks[ssp0] =
+ mmp_clk_register_apbc("ssp0", "ssp0_mux", apbc_base + APBC_SSP0, 10,
+ 0, &clk_lock);
+ clk_register_clkdev(clocks[ssp0], NULL, "mmp-ssp.0");
+
+ clocks[ssp1_mux] =
+ clk_register_mux(NULL, "ssp1_mux", ssp_parent,
+ ARRAY_SIZE(ssp_parent), CLK_SET_RATE_PARENT,
+ apbc_base + APBC_SSP1, 4, 3, 0, &clk_lock);
+ clk_register_clkdev(clocks[ssp1_mux], "ssp_mux.1", NULL);
+
+ clocks[ssp1] =
+ mmp_clk_register_apbc("ssp1", "ssp1_mux", apbc_base + APBC_SSP1, 10,
+ 0, &clk_lock);
+ clk_register_clkdev(clocks[ssp1], NULL, "mmp-ssp.1");
+
+ clocks[dfc] =
+ mmp_clk_register_apmu("dfc", "pll1_4", apmu_base + APMU_DFC, 0x19b,
+ &clk_lock);
+ clk_register_clkdev(clocks[dfc], NULL, "pxa3xx-nand.0");
+
+ clocks[sdh0_mux] =
+ clk_register_mux(NULL, "sdh0_mux", sdh_parent,
+ ARRAY_SIZE(sdh_parent), CLK_SET_RATE_PARENT,
+ apmu_base + APMU_SDH0, 6, 1, 0, &clk_lock);
+ clk_register_clkdev(clocks[sdh0_mux], "sdh0_mux", NULL);
+
+ clocks[sdh0] =
+ mmp_clk_register_apmu("sdh0", "sdh_mux", apmu_base + APMU_SDH0,
+ 0x1b, &clk_lock);
+ clk_register_clkdev(clocks[sdh0], NULL, "sdhci-pxa.0");
+
+ clocks[sdh1_mux] =
+ clk_register_mux(NULL, "sdh1_mux", sdh_parent,
+ ARRAY_SIZE(sdh_parent), CLK_SET_RATE_PARENT,
+ apmu_base + APMU_SDH1, 6, 1, 0, &clk_lock);
+ clk_register_clkdev(clocks[sdh1_mux], "sdh1_mux", NULL);
+
+ clocks[sdh1] =
+ mmp_clk_register_apmu("sdh1", "sdh1_mux", apmu_base + APMU_SDH1,
+ 0x1b, &clk_lock);
+ clk_register_clkdev(clocks[sdh1], NULL, "sdhci-pxa.1");
+
+ clocks[usb] =
+ mmp_clk_register_apmu("usb", "usb_pll", apmu_base + APMU_USB, 0x9,
+ &clk_lock);
+ clk_register_clkdev(clocks[usb], "usb_clk", NULL);
+
+ clocks[sph] =
+ mmp_clk_register_apmu("sph", "usb_pll", apmu_base + APMU_USB, 0x12,
+ &clk_lock);
+ clk_register_clkdev(clocks[sph], "sph_clk", NULL);
+
+ clocks[disp0_mux] =
+ clk_register_mux(NULL, "disp0_mux", disp_parent,
+ ARRAY_SIZE(disp_parent), CLK_SET_RATE_PARENT,
+ apmu_base + APMU_DISP0, 6, 1, 0, &clk_lock);
+ clk_register_clkdev(clocks[disp0_mux], "disp_mux.0", NULL);
+
+ clocks[disp0] =
+ mmp_clk_register_apmu("disp0", "disp0_mux", apmu_base + APMU_DISP0,
+ 0x1b, &clk_lock);
+ clk_register_clkdev(clocks[disp0], NULL, "mmp-disp.0");
+
+ clocks[ccic0_mux] =
+ clk_register_mux(NULL, "ccic0_mux", ccic_parent,
+ ARRAY_SIZE(ccic_parent), CLK_SET_RATE_PARENT,
+ apmu_base + APMU_CCIC0, 6, 1, 0, &clk_lock);
+ clk_register_clkdev(clocks[ccic0_mux], "ccic_mux.0", NULL);
+
+ clocks[ccic0] =
+ mmp_clk_register_apmu("ccic0", "ccic0_mux", apmu_base + APMU_CCIC0,
+ 0x1b, &clk_lock);
+ clk_register_clkdev(clocks[ccic0], "fnclk", "mmp-ccic.0");
+
+ clocks[ccic0_phy_mux] =
+ clk_register_mux(NULL, "ccic0_phy_mux", ccic_phy_parent,
+ ARRAY_SIZE(ccic_phy_parent), CLK_SET_RATE_PARENT,
+ apmu_base + APMU_CCIC0, 7, 1, 0, &clk_lock);
+ clk_register_clkdev(clocks[ccic0_phy_mux], "ccic_phy_mux.0", NULL);
+
+ clocks[ccic0_phy] =
+ mmp_clk_register_apmu("ccic0_phy", "ccic0_phy_mux",
+ apmu_base + APMU_CCIC0, 0x24, &clk_lock);
+ clk_register_clkdev(clocks[ccic0_phy], "phyclk", "mmp-ccic.0");
+
+ clocks[ccic0_sphy_div] =
+ clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_mux",
+ CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0,
+ 10, 5, 0, &clk_lock);
+ clk_register_clkdev(clocks[ccic0_sphy_div], "sphyclk_div", NULL);
+
+ clocks[ccic0_sphy] =
+ mmp_clk_register_apmu("ccic0_sphy", "ccic0_sphy_div",
+ apmu_base + APMU_CCIC0, 0x300, &clk_lock);
+ clk_register_clkdev(clocks[ccic0_sphy], "sphyclk", "mmp-ccic.0");
+
+}
--
1.7.0.4
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