ARM: mach-shmobile: G4EVM USBHS support
Add G4EVM platform data and a magic setup sequence to
initialize the r8a66597 block aka USBHS in sh7377.
Signed-off-by: NISHIMOTO Hiroki <nishimoto.hiroki@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/arm/mach-shmobile/board-g4evm.c b/arch/arm/mach-shmobile/board-g4evm.c
index ef4b0f5..5acd623 100644
--- a/arch/arm/mach-shmobile/board-g4evm.c
+++ b/arch/arm/mach-shmobile/board-g4evm.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/sh7377.h>
@@ -86,9 +87,50 @@
.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,
+ .end = 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 *g4evm_devices[] __initdata = {
&nor_flash_device,
+ &usb_host_device,
};
static struct map_desc g4evm_io_desc[] __initdata = {
@@ -137,6 +179,23 @@
gpio_direction_output(GPIO_PORT113, 1);
gpio_export(GPIO_PORT113, 1);
+ /* USBHS */
+ gpio_request(GPIO_FN_VBUS_0, 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 SMSTPCR3 */
+ __raw_writel(__raw_readl(0xe615013c) & ~(1 << 22), 0xe615013c);
+
+ /* setup USB phy */
+ __raw_writew(0x0200, 0xe605810a); /* USBCR1 */
+ __raw_writew(0x00e0, 0xe60581c0); /* CPFCH */
+ __raw_writew(0x6010, 0xe60581c6); /* CGPOSR */
+ __raw_writew(0x8a0a, 0xe605810c); /* USBCR2 */
+
sh7377_add_standard_devices();
platform_add_devices(g4evm_devices, ARRAY_SIZE(g4evm_devices));