| /* |
| * 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 <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 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(); |
| |
| r8a7740_meram_workaround(); |
| |
| #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(enum reboot_mode 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_late = shmobile_init_late, |
| .dt_compat = eva_boards_compat_dt, |
| .restart = eva_restart, |
| MACHINE_END |
