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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-02 14:23:01 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-02 14:23:01 -0700 |
commit | ee1a8d402e7e204d57fb108aa40003b6d1633036 (patch) | |
tree | 3abf4be63d11bbbd04c89bd668a17533f942b911 /arch/arm/mach-shmobile/board-armadillo800eva-reference.c | |
parent | 40e71e7015ab85c8606f50736525220948a3b24b (diff) | |
parent | 9686bb66a4c50e43ffee903a9fc62237ee2de1e6 (diff) | |
download | op-kernel-dev-ee1a8d402e7e204d57fb108aa40003b6d1633036.zip op-kernel-dev-ee1a8d402e7e204d57fb108aa40003b6d1633036.tar.gz |
Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC device tree changes from Arnd Bergmann:
"These changes from 30 individual branches for the most part update
device tree files, but there are also a few source code changes that
have crept in this time, usually in order to atomically move over a
driver from using hardcoded data to DT probing.
A number of platforms change their DT files to use the C preprocessor,
which is causing a bit of churn, but that is hopefully only this once"
* tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (372 commits)
ARM: at91: dt: rm9200ek: add spi support
ARM: at91: dt: rm9200: add spi support
ARM: at91/DT: at91sam9n12: add SPI DMA client infos
ARM: at91/DT: sama5d3: add SPI DMA client infos
ARM: at91/DT: fix SPI compatibility string
ARM: Kirkwood: Fix the internal register ranges translation
ARM: dts: bcm281xx: change comment to C89 style
ARM: mmc: bcm281xx SDHCI driver (dt mods)
ARM: nomadik: add the new clocks to the device tree
clk: nomadik: implement the Nomadik clocks properly
ARM: dts: omap5-uevm: Provide USB Host PHY clock frequency
ARM: dts: omap4-panda: Fix DVI EDID reads
ARM: dts: omap4-panda: Add USB Host support
arm: mvebu: enable mini-PCIe connectors on Armada 370 RD
ARM: shmobile: irqpin: add a DT property to enable masking on parent
ARM: dts: AM43x EPOS EVM support
ARM: dts: OMAP5: Add bandgap DT entry
ARM: dts: AM33XX: Add pinmux configuration for CPSW to am335x EVM
ARM: dts: AM33XX: Add pinmux configuration for CPSW to EVMsk
ARM: dts: AM33XX: Add pinmux configuration for CPSW to beaglebone
...
Diffstat (limited to 'arch/arm/mach-shmobile/board-armadillo800eva-reference.c')
-rw-r--r-- | arch/arm/mach-shmobile/board-armadillo800eva-reference.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/board-armadillo800eva-reference.c b/arch/arm/mach-shmobile/board-armadillo800eva-reference.c new file mode 100644 index 0000000..03b85fe --- /dev/null +++ b/arch/arm/mach-shmobile/board-armadillo800eva-reference.c @@ -0,0 +1,213 @@ +/* + * 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, 32K*8way */ + 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 |