ARM: shmobile: armadillo800eva: Reference DT implementation (76b92b40) · Commits · 戴 / test

arch/arm/boot/dts/Makefile

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		@@ -162,6 +162,7 @@ dtb-$(CONFIG_ARCH_U8500) += snowball.dtb \
		dtb-$(CONFIG_ARCH_SHMOBILE) += emev2-kzm9d.dtb \
		r8a7740-armadillo800eva.dtb \
		r8a7778-bockw.dtb \
		r8a7740-armadillo800eva-reference.dtb \
		r8a7779-marzen-reference.dtb \
		r8a7790-lager.dtb \
		sh73a0-kzm9g.dtb \

arch/arm/boot/dts/r8a7740-armadillo800eva-reference.dts

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		/*
		* Reference Device Tree Source for the armadillo 800 eva board
		*
		* Copyright (C) 2012 Renesas Solutions Corp.
		*
		* 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.
		*/

		/dts-v1/;
		/include/ "r8a7740.dtsi"

		/ {
		model = "armadillo 800 eva reference";
		compatible = "renesas,armadillo800eva-reference", "renesas,r8a7740";

		chosen {
		bootargs = "console=tty0 console=ttySC1,115200 earlyprintk=sh-sci.1,115200 ignore_loglevel root=/dev/nfs ip=dhcp nfsroot=,rsize=4096,wsize=4096 rw";
		};

		memory {
		device_type = "memory";
		reg = <0x40000000 0x20000000>;
		};

		reg_3p3v: regulator@0 {
		compatible = "regulator-fixed";
		regulator-name = "fixed-3.3V";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-always-on;
		regulator-boot-on;
		};

		};

		&i2c0 {
		touchscreen: st1232@55 {
		compatible = "sitronix,st1232";
		reg = <0x55>;
		interrupt-parent = <&irqpin1>;
		interrupts = <2 0>; /* IRQ10: hwirq 2 on irqpin1 */
		};
		};

arch/arm/mach-shmobile/Kconfig

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		@@ -129,6 +129,20 @@ config MACH_ARMADILLO800EVA
		select SND_SOC_WM8978 if SND_SIMPLE_CARD
		select USE_OF

		config MACH_ARMADILLO800EVA_REFERENCE
		bool "Armadillo-800 EVA board - Reference Device Tree Implementation"
		depends on ARCH_R8A7740
		select ARCH_REQUIRE_GPIOLIB
		select REGULATOR_FIXED_VOLTAGE if REGULATOR
		select SND_SOC_WM8978 if SND_SIMPLE_CARD
		select USE_OF
		---help---
		Use reference implementation of Aramdillo800 EVA board support
		which makes a greater use of device tree at the expense
		of not supporting a number of devices.

		This is intended to aid developers

		config MACH_BOCKW
		bool "BOCK-W platform"
		depends on ARCH_R8A7778

arch/arm/mach-shmobile/Makefile

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		@@ -46,6 +46,7 @@ obj-$(CONFIG_MACH_MARZEN) += board-marzen.o
		obj-$(CONFIG_MACH_MARZEN_REFERENCE) += board-marzen-reference.o
		obj-$(CONFIG_MACH_LAGER) += board-lager.o
		obj-$(CONFIG_MACH_ARMADILLO800EVA) += board-armadillo800eva.o
		obj-$(CONFIG_MACH_ARMADILLO800EVA_REFERENCE) += board-armadillo800eva-reference.o
		obj-$(CONFIG_MACH_KZM9D) += board-kzm9d.o
		obj-$(CONFIG_MACH_KZM9G) += board-kzm9g.o
		obj-$(CONFIG_MACH_KZM9G_REFERENCE) += board-kzm9g-reference.o

arch/arm/mach-shmobile/board-armadillo800eva-reference.c

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		/*
		* armadillo 800 eva board support
		*
		* Copyright (C) 2012 Renesas Solutions Corp.
		* Copyright (C) 2012 Kuninori Morimoto <kuninori.morimoto.gx@renesas.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; version 2 of the License.
		*
		* 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.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
		*
		*/

		#include <linux/clk.h>
		#include <linux/err.h>
		#include <linux/kernel.h>
		#include <linux/gpio.h>
		#include <linux/io.h>
		#include <linux/pinctrl/machine.h>
		#include <mach/common.h>
		#include <mach/r8a7740.h>
		#include <asm/mach/arch.h>
		#include <asm/hardware/cache-l2x0.h>

		/*
		* CON1 Camera Module
		* CON2 Extension Bus
		* CON3 HDMI Output
		* CON4 Composite Video Output
		* CON5 H-UDI JTAG
		* CON6 ARM JTAG
		* CON7 SD1
		* CON8 SD2
		* CON9 RTC BackUp
		* CON10 Monaural Mic Input
		* CON11 Stereo Headphone Output
		* CON12 Audio Line Output(L)
		* CON13 Audio Line Output(R)
		* CON14 AWL13 Module
		* CON15 Extension
		* CON16 LCD1
		* CON17 LCD2
		* CON19 Power Input
		* CON20 USB1
		* CON21 USB2
		* CON22 Serial
		* CON23 LAN
		* CON24 USB3
		* LED1 Camera LED(Yellow)
		* LED2 Power LED (Green)
		* ED3-LED6 User LED(Yellow)
		* LED7 LAN link LED(Green)
		* LED8 LAN activity LED(Yellow)
		*/

		/*
		* DipSwitch
		*
		* SW1
		*
		* -12345678-+---------------+----------------------------
		* 1 \| boot \| hermit
		* 0 \| boot \| OS auto boot
		* -12345678-+---------------+----------------------------
		* 00 \| boot device \| eMMC
		* 10 \| boot device \| SDHI0 (CON7)
		* 01 \| boot device \| -
		* 11 \| boot device \| Extension Buss (CS0)
		* -12345678-+---------------+----------------------------
		* 0 \| Extension Bus \| D8-D15 disable, eMMC enable
		* 1 \| Extension Bus \| D8-D15 enable, eMMC disable
		* -12345678-+---------------+----------------------------
		* 0 \| SDHI1 \| COM8 disable, COM14 enable
		* 1 \| SDHI1 \| COM8 enable, COM14 disable
		* -12345678-+---------------+----------------------------
		* 0 \| USB0 \| COM20 enable, COM24 disable
		* 1 \| USB0 \| COM20 disable, COM24 enable
		* -12345678-+---------------+----------------------------
		* 00 \| JTAG \| SH-X2
		* 10 \| JTAG \| ARM
		* 01 \| JTAG \| -
		* 11 \| JTAG \| Boundary Scan
		*-----------+---------------+----------------------------
		*/

		/*
		* FSI-WM8978
		*
		* this command is required when playback.
		*
		* # amixer set "Headphone" 50
		*
		* this command is required when capture.
		*
		* # amixer set "Input PGA" 15
		* # amixer set "Left Input Mixer MicP" on
		* # amixer set "Left Input Mixer MicN" on
		* # amixer set "Right Input Mixer MicN" on
		* # amixer set "Right Input Mixer MicP" on
		*/

		/*
		* USB function
		*
		* When you use USB Function,
		* set SW1.6 ON, and connect cable to CN24.
		*
		* USBF needs workaround on R8A7740 chip.
		* These are a little bit complex.
		* see
		* usbhsf_power_ctrl()
		*/

		static const struct pinctrl_map eva_pinctrl_map[] = {
		/* SCIFA1 */
		PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.1", "pfc-r8a7740",
		"scifa1_data", "scifa1"),
		};

		static void __init eva_clock_init(void)
		{
		struct clk *system = clk_get(NULL, "system_clk");
		struct clk *xtal1 = clk_get(NULL, "extal1");
		struct clk *usb24s = clk_get(NULL, "usb24s");
		struct clk *fsibck = clk_get(NULL, "fsibck");

		if (IS_ERR(system) \|\|
		IS_ERR(xtal1) \|\|
		IS_ERR(usb24s) \|\|
		IS_ERR(fsibck)) {
		pr_err("armadillo800eva board clock init failed\n");
		goto clock_error;
		}

		/* armadillo 800 eva extal1 is 24MHz */
		clk_set_rate(xtal1, 24000000);

		/* usb24s use extal1 (= system) clock (= 24MHz) */
		clk_set_parent(usb24s, system);

		/* FSIBCK is 12.288MHz, and it is parent of FSI-B */
		clk_set_rate(fsibck, 12288000);

		clock_error:
		if (!IS_ERR(system))
		clk_put(system);
		if (!IS_ERR(xtal1))
		clk_put(xtal1);
		if (!IS_ERR(usb24s))
		clk_put(usb24s);
		if (!IS_ERR(fsibck))
		clk_put(fsibck);
		}

		/*
		* board init
		*/
		static void __init eva_init(void)
		{

		r8a7740_clock_init(MD_CK0 \| MD_CK2);
		eva_clock_init();

		pinctrl_register_mappings(eva_pinctrl_map, ARRAY_SIZE(eva_pinctrl_map));
		r8a7740_pinmux_init();

		r8a7740_meram_workaround();

		/*
		* Touchscreen
		* TODO: Move reset GPIO over to .dts when we can reference it
		*/
		gpio_request_one(166, GPIOF_OUT_INIT_HIGH, NULL); /* TP_RST_B */

		#ifdef CONFIG_CACHE_L2X0
		/* Early BRESP enable, Shared attribute override enable, 32K8way /
		l2x0_init(IOMEM(0xf0002000), 0x40440000, 0x82000fff);
		#endif

		r8a7740_add_standard_devices_dt();
		r8a7740_pm_init();
		}

		#define RESCNT2 IOMEM(0xe6188020)
		static void eva_restart(char mode, const char *cmd)
		{
		/* Do soft power on reset */
		writel((1 << 31), RESCNT2);
		}

		static const char *eva_boards_compat_dt[] __initdata = {
		"renesas,armadillo800eva-reference",
		NULL,
		};

		DT_MACHINE_START(ARMADILLO800EVA_DT, "armadillo800eva-reference")
		.map_io = r8a7740_map_io,
		.init_early = r8a7740_init_delay,
		.init_irq = r8a7740_init_irq_of,
		.init_machine = eva_init,
		.init_time = shmobile_timer_init,
		.init_late = shmobile_init_late,
		.dt_compat = eva_boards_compat_dt,
		.restart = eva_restart,
		MACHINE_END

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