[PATCHv2 0/5] Support for Marvell switches with integrated CPUs
Chris Packham
chris.packham at alliedtelesis.co.nz
Thu Jan 5 20:14:57 PST 2017
The 98DX3236, 98DX3336 and 98DX4251 are a set of switch ASICs with
integrated CPUs. They CPU block is common within these product lines and
(as far as I can tell/have been told) is based on the Armada XP. There
are a few differences due to the fact they have to squeeze the CPU into
the same package as the switch.
Chris Packham (4):
clk: mvebu: support for 98DX3236 SoC
Changes in v2:
- Update devicetree binding documentation for new compatible string
Changes in v3:
- Add 98dx3236 support to mvebu/clk-corediv.c rather than creating a
new driver.
- Document mv98dx3236-corediv-clock binding
arm: mvebu: support for SMP on 98DX3336 SoC
Changes in v2:
- Document new enable-method value
- Correct some references from 98DX4521 to 98DX3236
Changes in v3:
- Simplify mv98dx3236_resume_init by using of_io_request_and_map()
arm: mvebu: Add device tree for 98DX3236 SoCs
Changes in v2:
- Update devicetree binding documentation to reflect that 98DX3336 and
984251 are supersets of 98DX3236.
- disable crypto block
- disable sdio for 98DX3236, enable for 98DX4251
Changes in v3:
- fix typo 4521 -> 4251
- document prestera bindings
- rework corediv-clock binding
- add label to packet processor node
- add new compativle string for DFX server
arm: mvebu: Add device tree for db-dxbc2 and db-xc3-24g4xg boards
Changes in v2/v3:
- none
Kalyan Kinthada (1):
pinctrl: mvebu: pinctrl driver for 98DX3236 SoC
Changes in v2:
- include sdio support for the 98DX4251
Changes in v3:
- None
Documentation/devicetree/bindings/arm/cpus.txt | 1 +
.../bindings/arm/marvell/98dx3236-resume-ctrl.txt | 18 ++
.../devicetree/bindings/arm/marvell/98dx3236.txt | 23 ++
.../bindings/clock/mvebu-corediv-clock.txt | 1 +
.../devicetree/bindings/clock/mvebu-cpu-clock.txt | 1 +
.../devicetree/bindings/net/marvell,prestera.txt | 50 ++++
.../pinctrl/marvell,armada-98dx3236-pinctrl.txt | 46 ++++
arch/arm/boot/dts/armada-xp-98dx3236.dtsi | 254 +++++++++++++++++++++
arch/arm/boot/dts/armada-xp-98dx3336.dtsi | 76 ++++++
arch/arm/boot/dts/armada-xp-98dx4251.dtsi | 90 ++++++++
arch/arm/boot/dts/db-dxbc2.dts | 159 +++++++++++++
arch/arm/boot/dts/db-xc3-24g4xg.dts | 155 +++++++++++++
arch/arm/mach-mvebu/Makefile | 1 +
arch/arm/mach-mvebu/common.h | 1 +
arch/arm/mach-mvebu/platsmp.c | 43 ++++
arch/arm/mach-mvebu/pmsu-98dx3236.c | 52 +++++
drivers/clk/mvebu/armada-xp.c | 42 ++++
drivers/clk/mvebu/clk-corediv.c | 23 ++
drivers/clk/mvebu/clk-cpu.c | 31 ++-
drivers/pinctrl/mvebu/pinctrl-armada-xp.c | 155 +++++++++++++
20 files changed, 1220 insertions(+), 2 deletions(-)
create mode 100644 Documentation/devicetree/bindings/arm/marvell/98dx3236-resume-ctrl.txt
create mode 100644 Documentation/devicetree/bindings/arm/marvell/98dx3236.txt
create mode 100644 Documentation/devicetree/bindings/net/marvell,prestera.txt
create mode 100644 Documentation/devicetree/bindings/pinctrl/marvell,armada-98dx3236-pinctrl.txt
create mode 100644 arch/arm/boot/dts/armada-xp-98dx3236.dtsi
create mode 100644 arch/arm/boot/dts/armada-xp-98dx3336.dtsi
create mode 100644 arch/arm/boot/dts/armada-xp-98dx4251.dtsi
create mode 100644 arch/arm/boot/dts/db-dxbc2.dts
create mode 100644 arch/arm/boot/dts/db-xc3-24g4xg.dts
create mode 100644 arch/arm/mach-mvebu/pmsu-98dx3236.c
Interdiff to v2:
diff --git
a/Documentation/devicetree/bindings/clock/mvebu-corediv-clock.txt
b/Documentation/devicetree/bindings/clock/mvebu-corediv-clock.txt
index 520562a7dc2a..c7b4e3a6b2c6 100644
--- a/Documentation/devicetree/bindings/clock/mvebu-corediv-clock.txt
+++ b/Documentation/devicetree/bindings/clock/mvebu-corediv-clock.txt
@@ -7,6 +7,7 @@ Required properties:
- compatible : must be "marvell,armada-370-corediv-clock",
"marvell,armada-375-corediv-clock",
"marvell,armada-380-corediv-clock",
+ "marvell,mv98dx3236-corediv-clock",
- reg : must be the register address of Core Divider control register
- #clock-cells : from common clock binding; shall be set to 1
diff --git a/Documentation/devicetree/bindings/net/marvell,prestera.txt
b/Documentation/devicetree/bindings/net/marvell,prestera.txt
new file mode 100644
index 000000000000..5fbab29718e8
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/marvell,prestera.txt
@@ -0,0 +1,50 @@
+Marvell Prestera Switch Chip bindings
+-------------------------------------
+
+Required properties:
+- compatible: one of the following
+ "marvell,prestera-98dx3236",
+ "marvell,prestera-98dx3336",
+ "marvell,prestera-98dx4251",
+- reg: address and length of the register set for the device.
+- interrupts: interrupt for the device
+
+Optional properties:
+- dfx: phandle reference to the "DFX Server" node
+
+Example:
+
+switch {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 MBUS_ID(0x03, 0x00) 0 0x100000>;
+
+ packet-processor at 0 {
+ compatible = "marvell,prestera-98dx3236";
+ reg = <0 0x4000000>;
+ interrupts = <33>, <34>, <35>;
+ dfx = <&dfx>;
+ };
+};
+
+DFX Server bindings
+-------------------
+
+Required properties:
+- compatible: must be "marvell,dfx-server"
+- reg: address and length of the register set for the device.
+
+Example:
+
+dfx-registers {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 MBUS_ID(0x08, 0x00) 0 0x100000>;
+
+ dfx: dfx at 0 {
+ compatible = "marvell,dfx-server";
+ reg = <0 0x100000>;
+ };
+};
diff --git a/arch/arm/boot/dts/armada-xp-98dx3236.dtsi
b/arch/arm/boot/dts/armada-xp-98dx3236.dtsi
index 61bd3acc5cfe..4b7b2fe3b682 100644
--- a/arch/arm/boot/dts/armada-xp-98dx3236.dtsi
+++ b/arch/arm/boot/dts/armada-xp-98dx3236.dtsi
@@ -126,12 +126,7 @@
};
corediv-clock at 18740 {
- compatible =
"marvell,mv98dx3236-corediv-clock";
- reg = <0xf8268 0xc>;
- base = <&dfx>;
- #clock-cells = <1>;
- clocks = <&mainpll>;
- clock-output-names = "nand";
+ status = "disabled";
};
xor at 60900 {
@@ -194,6 +189,10 @@
#interrupt-cells = <2>;
interrupts = <87>;
};
+
+ nand: nand at d0000 {
+ clocks = <&dfx_coredivclk 0>;
+ };
};
dfx-registers {
@@ -202,8 +201,16 @@
#size-cells = <1>;
ranges = <0 MBUS_ID(0x08, 0x00) 0 0x100000>;
+ dfx_coredivclk: corediv-clock at f8268 {
+ compatible =
"marvell,mv98dx3236-corediv-clock";
+ reg = <0xf8268 0xc>;
+ #clock-cells = <1>;
+ clocks = <&mainpll>;
+ clock-output-names = "nand";
+ };
+
dfx: dfx at 0 {
- compatible = "simple-bus";
+ compatible = "marvell,dfx-server";
reg = <0 0x100000>;
};
};
@@ -214,7 +221,7 @@
#size-cells = <1>;
ranges = <0 MBUS_ID(0x03, 0x00) 0 0x100000>;
- packet-processor at 0 {
+ pp0: packet-processor at 0 {
compatible =
"marvell,prestera-98dx3236";
reg = <0 0x4000000>;
interrupts = <33>, <34>, <35>;
diff --git a/arch/arm/boot/dts/armada-xp-98dx3336.dtsi
b/arch/arm/boot/dts/armada-xp-98dx3336.dtsi
index 9c9aa565fd82..a9b0f47f8df9 100644
--- a/arch/arm/boot/dts/armada-xp-98dx3336.dtsi
+++ b/arch/arm/boot/dts/armada-xp-98dx3336.dtsi
@@ -68,11 +68,9 @@
reg = <0x20980 0x10>;
};
};
-
- switch {
- packet-processor at 0 {
- compatible =
"marvell,prestera-98dx3336";
- };
- };
};
};
+
+&pp0 {
+ compatible = "marvell,prestera-98dx3336";
+};
diff --git a/arch/arm/boot/dts/armada-xp-98dx4251.dtsi
b/arch/arm/boot/dts/armada-xp-98dx4251.dtsi
index 5f7edc23d5ae..446e6e65ec59 100644
--- a/arch/arm/boot/dts/armada-xp-98dx4251.dtsi
+++ b/arch/arm/boot/dts/armada-xp-98dx4251.dtsi
@@ -68,12 +68,6 @@
reg = <0x20980 0x10>;
};
};
-
- switch {
- packet-processor at 0 {
- compatible =
"marvell,prestera-98dx4521";
- };
- };
};
};
@@ -90,3 +84,7 @@
marvell,function = "sd0";
};
};
+
+&pp0 {
+ compatible = "marvell,prestera-98dx4251";
+};
diff --git a/arch/arm/mach-mvebu/pmsu-98dx3236.c
b/arch/arm/mach-mvebu/pmsu-98dx3236.c
index 87ca42ef40c7..1052674dd439 100644
--- a/arch/arm/mach-mvebu/pmsu-98dx3236.c
+++ b/arch/arm/mach-mvebu/pmsu-98dx3236.c
@@ -31,39 +31,22 @@ void mv98dx3236_resume_set_cpu_boot_addr(int hw_cpu,
void *boot_addr)
static int __init mv98dx3236_resume_init(void)
{
struct device_node *np;
- struct resource res;
- int ret = 0;
+ void __iomem *base;
np = of_find_matching_node(NULL, of_mv98dx3236_resume_table);
if (!np)
return 0;
- pr_info("Initializing 98DX3236 Resume\n");
-
- if (of_address_to_resource(np, 0, &res)) {
- pr_err("unable to get resource\n");
- ret = -ENOENT;
- goto out;
- }
-
- if (!request_mem_region(res.start, resource_size(&res),
- np->full_name)) {
- pr_err("unable to request region\n");
- ret = -EBUSY;
- goto out;
- }
-
- mv98dx3236_resume_base = ioremap(res.start,
resource_size(&res));
- if (!mv98dx3236_resume_base) {
+ base = of_io_request_and_map(np, 0, of_node_full_name(np));
+ if (IS_ERR(base)) {
pr_err("unable to map registers\n");
- release_mem_region(res.start, resource_size(&res));
- ret = -ENOMEM;
- goto out;
+ of_node_put(np);
+ return PTR_ERR(mv98dx3236_resume_base);
}
-out:
+ mv98dx3236_resume_base = base;
of_node_put(np);
- return ret;
+ return 0;
}
early_initcall(mv98dx3236_resume_init);
diff --git a/drivers/clk/mvebu/Makefile b/drivers/clk/mvebu/Makefile
index 6a3681e3d6db..d9ae97fb43c4 100644
--- a/drivers/clk/mvebu/Makefile
+++ b/drivers/clk/mvebu/Makefile
@@ -9,7 +9,7 @@ obj-$(CONFIG_ARMADA_39X_CLK) += armada-39x.o
obj-$(CONFIG_ARMADA_37XX_CLK) += armada-37xx-xtal.o
obj-$(CONFIG_ARMADA_37XX_CLK) += armada-37xx-tbg.o
obj-$(CONFIG_ARMADA_37XX_CLK) += armada-37xx-periph.o
-obj-$(CONFIG_ARMADA_XP_CLK) += armada-xp.o mv98dx3236-corediv.o
+obj-$(CONFIG_ARMADA_XP_CLK) += armada-xp.o
obj-$(CONFIG_ARMADA_AP806_SYSCON) += ap806-system-controller.o
obj-$(CONFIG_ARMADA_CP110_SYSCON) += cp110-system-controller.o
obj-$(CONFIG_DOVE_CLK) += dove.o dove-divider.o
diff --git a/drivers/clk/mvebu/clk-corediv.c
b/drivers/clk/mvebu/clk-corediv.c
index d1e5863d3375..8491979f4096 100644
--- a/drivers/clk/mvebu/clk-corediv.c
+++ b/drivers/clk/mvebu/clk-corediv.c
@@ -71,6 +71,10 @@ static const struct clk_corediv_desc
mvebu_corediv_desc[] = {
{ .mask = 0x3f, .offset = 8, .fieldbit = 1 }, /* NAND clock */
};
+static const struct clk_corediv_desc mv98dx3236_corediv_desc[] = {
+ { .mask = 0x0f, .offset = 6, .fieldbit = 26 }, /* NAND clock */
+};
+
#define to_corediv_clk(p) container_of(p, struct clk_corediv, hw)
static int clk_corediv_is_enabled(struct clk_hw *hwclk)
@@ -232,6 +236,18 @@ static const struct clk_corediv_soc_desc
armada375_corediv_soc = {
.ratio_offset = 0x4,
};
+static const struct clk_corediv_soc_desc mv98dx3236_corediv_soc = {
+ .descs = mv98dx3236_corediv_desc,
+ .ndescs = ARRAY_SIZE(mv98dx3236_corediv_desc),
+ .ops = {
+ .recalc_rate = clk_corediv_recalc_rate,
+ .round_rate = clk_corediv_round_rate,
+ .set_rate = clk_corediv_set_rate,
+ },
+ .ratio_reload = BIT(10),
+ .ratio_offset = 0x8,
+};
+
static void __init
mvebu_corediv_clk_init(struct device_node *node,
const struct clk_corediv_soc_desc *soc_desc)
@@ -313,3 +329,10 @@ static void __init
armada380_corediv_clk_init(struct device_node *node)
}
CLK_OF_DECLARE(armada380_corediv_clk,
"marvell,armada-380-corediv-clock",
armada380_corediv_clk_init);
+
+static void __init mv98dx3236_corediv_clk_init(struct device_node
*node)
+{
+ return mvebu_corediv_clk_init(node, &mv98dx3236_corediv_soc);
+}
+CLK_OF_DECLARE(mv98dx3236_corediv_clk,
"marvell,mv98dx3236-corediv-clock",
+ mv98dx3236_corediv_clk_init);
diff --git a/drivers/clk/mvebu/clk-cpu.c b/drivers/clk/mvebu/clk-cpu.c
index 29f295e7a36b..3b8f0e14fa01 100644
--- a/drivers/clk/mvebu/clk-cpu.c
+++ b/drivers/clk/mvebu/clk-cpu.c
@@ -254,7 +254,7 @@ static void __init of_cpu_clk_setup(struct
device_node *node)
}
CLK_OF_DECLARE(armada_xp_cpu_clock, "marvell,armada-xp-cpu-clock",
- of_cpu_clk_setup);
+ of_cpu_clk_setup);
/* Define the clock and operations for the mv98dx3236 - it cannot
* perform
* any operations.
diff --git a/drivers/clk/mvebu/mv98dx3236-corediv.c
b/drivers/clk/mvebu/mv98dx3236-corediv.c
deleted file mode 100644
index 3060764a8e5d..000000000000
--- a/drivers/clk/mvebu/mv98dx3236-corediv.c
+++ /dev/null
@@ -1,207 +0,0 @@
-/*
- * MV98DX3236 Core divider clock
- *
- * Copyright (C) 2015 Allied Telesis Labs
- *
- * Based on armada-xp-corediv.c
- * Copyright (C) 2015 Marvell
- *
- * John Thompson <john.thompson at alliedtelesis.co.nz>
- *
- * 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/kernel.h>
-#include <linux/clk-provider.h>
-#include <linux/of_address.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include "common.h"
-
-#define CORE_CLK_DIV_RATIO_MASK 0xff
-
-#define CLK_DIV_RATIO_NAND_MASK 0x0f
-#define CLK_DIV_RATIO_NAND_OFFSET 6
-#define CLK_DIV_RATIO_NAND_FORCE_RELOAD_BIT 26
-
-#define RATIO_RELOAD_BIT BIT(10)
-#define RATIO_REG_OFFSET 0x08
-
-/*
- * This structure represents one core divider clock for the clock
- * framework, and is dynamically allocated for each core divider clock
- * existing in the current SoC.
- */
-struct clk_corediv {
- struct clk_hw hw;
- void __iomem *reg;
- spinlock_t lock;
-};
-
-static struct clk_onecell_data clk_data;
-
-
-#define to_corediv_clk(p) container_of(p, struct clk_corediv, hw)
-
-static int mv98dx3236_corediv_is_enabled(struct clk_hw *hwclk)
-{
- /* Core divider is always active */
- return 1;
-}
-
-static int mv98dx3236_corediv_enable(struct clk_hw *hwclk)
-{
- /* always succeeds */
- return 0;
-}
-
-static void mv98dx3236_corediv_disable(struct clk_hw *hwclk)
-{
- /* can't be disabled so is left alone */
-}
-
-static unsigned long mv98dx3236_corediv_recalc_rate(struct clk_hw
*hwclk,
- unsigned long parent_rate)
-{
- struct clk_corediv *corediv = to_corediv_clk(hwclk);
- u32 reg, div;
-
- reg = readl(corediv->reg + RATIO_REG_OFFSET);
- div = (reg >> CLK_DIV_RATIO_NAND_OFFSET) &
CLK_DIV_RATIO_NAND_MASK;
- return parent_rate / div;
-}
-
-static long mv98dx3236_corediv_round_rate(struct clk_hw *hwclk,
- unsigned long rate, unsigned long
*parent_rate)
-{
- /* Valid ratio are 1:4, 1:5, 1:6 and 1:8 */
- u32 div;
-
- div = *parent_rate / rate;
- if (div < 4)
- div = 4;
- else if (div > 6)
- div = 8;
-
- return *parent_rate / div;
-}
-
-static int mv98dx3236_corediv_set_rate(struct clk_hw *hwclk, unsigned
long rate,
- unsigned long parent_rate)
-{
- struct clk_corediv *corediv = to_corediv_clk(hwclk);
- unsigned long flags = 0;
- u32 reg, div;
-
- div = parent_rate / rate;
-
- spin_lock_irqsave(&corediv->lock, flags);
-
- /* Write new divider to the divider ratio register */
- reg = readl(corediv->reg + RATIO_REG_OFFSET);
- reg &= ~(CLK_DIV_RATIO_NAND_MASK << CLK_DIV_RATIO_NAND_OFFSET);
- reg |= (div & CLK_DIV_RATIO_NAND_MASK) <<
CLK_DIV_RATIO_NAND_OFFSET;
- writel(reg, corediv->reg + RATIO_REG_OFFSET);
-
- /* Set reload-force for this clock */
- reg = readl(corediv->reg) |
BIT(CLK_DIV_RATIO_NAND_FORCE_RELOAD_BIT);
- writel(reg, corediv->reg);
-
- /* Now trigger the clock update */
- reg = readl(corediv->reg + RATIO_REG_OFFSET) | RATIO_RELOAD_BIT;
- writel(reg, corediv->reg + RATIO_REG_OFFSET);
-
- /*
- * Wait for clocks to settle down, and then clear all the
- * ratios request and the reload request.
- */
- udelay(1000);
- reg &= ~(CORE_CLK_DIV_RATIO_MASK | RATIO_RELOAD_BIT);
- writel(reg, corediv->reg + RATIO_REG_OFFSET);
- udelay(1000);
-
- spin_unlock_irqrestore(&corediv->lock, flags);
-
- return 0;
-}
-
-static const struct clk_ops ops = {
- .enable = mv98dx3236_corediv_enable,
- .disable = mv98dx3236_corediv_disable,
- .is_enabled = mv98dx3236_corediv_is_enabled,
- .recalc_rate = mv98dx3236_corediv_recalc_rate,
- .round_rate = mv98dx3236_corediv_round_rate,
- .set_rate = mv98dx3236_corediv_set_rate,
-};
-
-static void __init mv98dx3236_corediv_clk_init(struct device_node
*node)
-{
- struct clk_init_data init;
- struct clk_corediv *corediv;
- struct clk **clks;
- void __iomem *base;
- const __be32 *off;
- const char *parent_name;
- const char *clk_name;
- int len;
- struct device_node *dfx_node;
-
- dfx_node = of_parse_phandle(node, "base", 0);
- if (WARN_ON(!dfx_node))
- return;
-
- off = of_get_property(node, "reg", &len);
- if (WARN_ON(!off))
- return;
-
- base = of_iomap(dfx_node, 0);
- if (WARN_ON(!base))
- return;
-
- of_node_put(dfx_node);
-
- parent_name = of_clk_get_parent_name(node, 0);
-
- clk_data.clk_num = 1;
-
- /* clks holds the clock array */
- clks = kcalloc(clk_data.clk_num, sizeof(struct clk *),
- GFP_KERNEL);
- if (WARN_ON(!clks))
- goto err_unmap;
- /* corediv holds the clock specific array */
- corediv = kcalloc(clk_data.clk_num, sizeof(struct clk_corediv),
- GFP_KERNEL);
- if (WARN_ON(!corediv))
- goto err_free_clks;
-
- spin_lock_init(&corediv->lock);
-
- of_property_read_string_index(node, "clock-output-names",
- 0, &clk_name);
-
- init.num_parents = 1;
- init.parent_names = &parent_name;
- init.name = clk_name;
- init.ops = &ops;
- init.flags = 0;
-
- corediv[0].reg = (void *)((int)base + be32_to_cpu(*off));
- corediv[0].hw.init = &init;
-
- clks[0] = clk_register(NULL, &corediv[0].hw);
- WARN_ON(IS_ERR(clks[0]));
-
- clk_data.clks = clks;
- of_clk_add_provider(node, of_clk_src_onecell_get, &clk_data);
- return;
-
-err_free_clks:
- kfree(clks);
-err_unmap:
- iounmap(base);
-}
-
-CLK_OF_DECLARE(mv98dx3236_corediv_clk,
"marvell,mv98dx3236-corediv-clock",
- mv98dx3236_corediv_clk_init);
--
2.11.0.24.ge6920cf
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