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authorMagnus Damm <damm@opensource.se>2010-02-10 20:13:31 +0900
committerPaul Mundt <lethal@linux-sh.org>2010-02-12 14:10:48 +0900
commit3a7b802d1a8c279876ec74094d71f3c6c45d8030 (patch)
tree22a433940280039b35d1f5222f53d190d49bc2db
parent7fdda6780aaa21c7a94e09975649649bb0f4a932 (diff)
downloadblackbird-op-linux-3a7b802d1a8c279876ec74094d71f3c6c45d8030.tar.gz
blackbird-op-linux-3a7b802d1a8c279876ec74094d71f3c6c45d8030.zip
ARM: mach-shmobile: G3EVM USBHS support
Add G3EVM platform data and a magic setup sequence to initialize the r8a66597 block aka USBHS in sh7367. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
-rw-r--r--arch/arm/mach-shmobile/board-g3evm.c58
-rw-r--r--arch/arm/mach-shmobile/clock-sh7367.c7
2 files changed, 65 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/board-g3evm.c b/arch/arm/mach-shmobile/board-g3evm.c
index 28ee589caba6..f36c9a94d326 100644
--- a/arch/arm/mach-shmobile/board-g3evm.c
+++ b/arch/arm/mach-shmobile/board-g3evm.c
@@ -26,6 +26,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
+#include <linux/usb/r8a66597.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <mach/sh7367.h>
@@ -86,9 +87,49 @@ static struct platform_device nor_flash_device = {
.resource = nor_flash_resources,
};
+/* USBHS */
+void usb_host_port_power(int port, int power)
+{
+ if (!power) /* only power-on supported for now */
+ return;
+
+ /* set VBOUT/PWEN and EXTLP0 in DVSTCTR */
+ __raw_writew(__raw_readw(0xe6890008) | 0x600, 0xe6890008);
+}
+
+static struct r8a66597_platdata usb_host_data = {
+ .on_chip = 1,
+ .port_power = usb_host_port_power,
+};
+
+static struct resource usb_host_resources[] = {
+ [0] = {
+ .name = "USBHS",
+ .start = 0xe6890000,
+ .end = 0xe68900e5,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = 65,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device usb_host_device = {
+ .name = "r8a66597_hcd",
+ .id = 0,
+ .dev = {
+ .platform_data = &usb_host_data,
+ .dma_mask = NULL,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .num_resources = ARRAY_SIZE(usb_host_resources),
+ .resource = usb_host_resources,
+};
static struct platform_device *g3evm_devices[] __initdata = {
&nor_flash_device,
+ &usb_host_device,
};
static struct map_desc g3evm_io_desc[] __initdata = {
@@ -138,6 +179,23 @@ static void __init g3evm_init(void)
gpio_request(GPIO_FN_SCIFA1_CTS, NULL);
gpio_request(GPIO_FN_SCIFA1_RTS, NULL);
+ /* USBHS */
+ gpio_request(GPIO_FN_VBUS0, NULL);
+ gpio_request(GPIO_FN_PWEN, NULL);
+ gpio_request(GPIO_FN_OVCN, NULL);
+ gpio_request(GPIO_FN_OVCN2, NULL);
+ gpio_request(GPIO_FN_EXTLP, NULL);
+ gpio_request(GPIO_FN_IDIN, NULL);
+
+ /* enable clock in SYMSTPCR2 */
+ __raw_writel(__raw_readl(0xe6158048) & ~(1 << 22), 0xe6158048);
+
+ /* setup USB phy */
+ __raw_writew(0x0300, 0xe605810a); /* USBCR1 */
+ __raw_writew(0x00e0, 0xe60581c0); /* CPFCH */
+ __raw_writew(0x6010, 0xe60581c6); /* CGPOSR */
+ __raw_writew(0x8a0a, 0xe605810c); /* USBCR2 */
+
sh7367_add_standard_devices();
platform_add_devices(g3evm_devices, ARRAY_SIZE(g3evm_devices));
diff --git a/arch/arm/mach-shmobile/clock-sh7367.c b/arch/arm/mach-shmobile/clock-sh7367.c
index 3b2e3f2fc7ea..58bd54e1113a 100644
--- a/arch/arm/mach-shmobile/clock-sh7367.c
+++ b/arch/arm/mach-shmobile/clock-sh7367.c
@@ -70,11 +70,18 @@ static struct clk r_clk = {
.rate = 32768,
};
+/* a static usb0 for now - enough to get r8a66597 working */
+static struct clk usb0_clk = {
+ .name = "usb0",
+};
+
static struct clk_lookup lookups[] = {
{
.clk = &peripheral_clk,
}, {
.clk = &r_clk,
+ }, {
+ .clk = &usb0_clk,
}
};
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