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Diffstat (limited to 'kernel/arch/arm/mach-nomadik/cpu-8815.c')
-rw-r--r--kernel/arch/arm/mach-nomadik/cpu-8815.c159
1 files changed, 159 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-nomadik/cpu-8815.c b/kernel/arch/arm/mach-nomadik/cpu-8815.c
new file mode 100644
index 000000000..9bda46f1f
--- /dev/null
+++ b/kernel/arch/arm/mach-nomadik/cpu-8815.c
@@ -0,0 +1,159 @@
+/*
+ * Copyright STMicroelectronics, 2007.
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/amba/bus.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/irq.h>
+#include <linux/dma-mapping.h>
+#include <linux/of_irq.h>
+#include <linux/of_gpio.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/gpio.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <asm/mach-types.h>
+
+#include <asm/cacheflush.h>
+#include <asm/hardware/cache-l2x0.h>
+
+/*
+ * These are the only hard-coded address offsets we still have to use.
+ */
+#define NOMADIK_FSMC_BASE 0x10100000 /* FSMC registers */
+#define NOMADIK_SDRAMC_BASE 0x10110000 /* SDRAM Controller */
+#define NOMADIK_CLCDC_BASE 0x10120000 /* CLCD Controller */
+#define NOMADIK_MDIF_BASE 0x10120000 /* MDIF */
+#define NOMADIK_DMA0_BASE 0x10130000 /* DMA0 Controller */
+#define NOMADIK_IC_BASE 0x10140000 /* Vectored Irq Controller */
+#define NOMADIK_DMA1_BASE 0x10150000 /* DMA1 Controller */
+#define NOMADIK_USB_BASE 0x10170000 /* USB-OTG conf reg base */
+#define NOMADIK_CRYP_BASE 0x10180000 /* Crypto processor */
+#define NOMADIK_SHA1_BASE 0x10190000 /* SHA-1 Processor */
+#define NOMADIK_XTI_BASE 0x101A0000 /* XTI */
+#define NOMADIK_RNG_BASE 0x101B0000 /* Random number generator */
+#define NOMADIK_SRC_BASE 0x101E0000 /* SRC base */
+#define NOMADIK_WDOG_BASE 0x101E1000 /* Watchdog */
+#define NOMADIK_MTU0_BASE 0x101E2000 /* Multiple Timer 0 */
+#define NOMADIK_MTU1_BASE 0x101E3000 /* Multiple Timer 1 */
+#define NOMADIK_GPIO0_BASE 0x101E4000 /* GPIO0 */
+#define NOMADIK_GPIO1_BASE 0x101E5000 /* GPIO1 */
+#define NOMADIK_GPIO2_BASE 0x101E6000 /* GPIO2 */
+#define NOMADIK_GPIO3_BASE 0x101E7000 /* GPIO3 */
+#define NOMADIK_RTC_BASE 0x101E8000 /* Real Time Clock base */
+#define NOMADIK_PMU_BASE 0x101E9000 /* Power Management Unit */
+#define NOMADIK_OWM_BASE 0x101EA000 /* One wire master */
+#define NOMADIK_SCR_BASE 0x101EF000 /* Secure Control registers */
+#define NOMADIK_MSP2_BASE 0x101F0000 /* MSP 2 interface */
+#define NOMADIK_MSP1_BASE 0x101F1000 /* MSP 1 interface */
+#define NOMADIK_UART2_BASE 0x101F2000 /* UART 2 interface */
+#define NOMADIK_SSIRx_BASE 0x101F3000 /* SSI 8-ch rx interface */
+#define NOMADIK_SSITx_BASE 0x101F4000 /* SSI 8-ch tx interface */
+#define NOMADIK_MSHC_BASE 0x101F5000 /* Memory Stick(Pro) Host */
+#define NOMADIK_SDI_BASE 0x101F6000 /* SD-card/MM-Card */
+#define NOMADIK_I2C1_BASE 0x101F7000 /* I2C1 interface */
+#define NOMADIK_I2C0_BASE 0x101F8000 /* I2C0 interface */
+#define NOMADIK_MSP0_BASE 0x101F9000 /* MSP 0 interface */
+#define NOMADIK_FIRDA_BASE 0x101FA000 /* FIrDA interface */
+#define NOMADIK_UART1_BASE 0x101FB000 /* UART 1 interface */
+#define NOMADIK_SSP_BASE 0x101FC000 /* SSP interface */
+#define NOMADIK_UART0_BASE 0x101FD000 /* UART 0 interface */
+#define NOMADIK_SGA_BASE 0x101FE000 /* SGA interface */
+#define NOMADIK_L2CC_BASE 0x10210000 /* L2 Cache controller */
+#define NOMADIK_UART1_VBASE 0xF01FB000
+
+/* This is needed for LL-debug/earlyprintk/debug-macro.S */
+static struct map_desc cpu8815_io_desc[] __initdata = {
+ {
+ .virtual = NOMADIK_UART1_VBASE,
+ .pfn = __phys_to_pfn(NOMADIK_UART1_BASE),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ },
+};
+
+static void __init cpu8815_map_io(void)
+{
+ iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc));
+}
+
+static void cpu8815_restart(enum reboot_mode mode, const char *cmd)
+{
+ void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K);
+
+ /* FIXME: use egpio when implemented */
+
+ /* Write anything to Reset status register */
+ writel(1, srcbase + 0x18);
+}
+
+/*
+ * This GPIO pin turns on a line that is used to detect card insertion
+ * on this board.
+ */
+static int __init cpu8815_mmcsd_init(void)
+{
+ struct device_node *cdbias;
+ int gpio, err;
+
+ cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio");
+ if (!cdbias) {
+ pr_info("could not find MMC/SD card detect bias node\n");
+ return 0;
+ }
+ gpio = of_get_gpio(cdbias, 0);
+ if (gpio < 0) {
+ pr_info("could not obtain MMC/SD card detect bias GPIO\n");
+ return 0;
+ }
+ err = gpio_request(gpio, "card detect bias");
+ if (err) {
+ pr_info("failed to request card detect bias GPIO %d\n", gpio);
+ return -ENODEV;
+ }
+ err = gpio_direction_output(gpio, 0);
+ if (err){
+ pr_info("failed to set GPIO %d as output, low\n", gpio);
+ return err;
+ }
+ pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio);
+ return 0;
+}
+device_initcall(cpu8815_mmcsd_init);
+
+static const char * cpu8815_board_compat[] = {
+ "st,nomadik-nhk-15",
+ "calaosystems,usb-s8815",
+ NULL,
+};
+
+DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815")
+ /* At full speed latency must be >=2, so 0x249 in low bits */
+ .l2c_aux_val = 0x00700249,
+ .l2c_aux_mask = 0xfe0fefff,
+ .map_io = cpu8815_map_io,
+ .restart = cpu8815_restart,
+ .dt_compat = cpu8815_board_compat,
+MACHINE_END