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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>
This commit is contained in:
Magnus Damm 2010-02-10 20:13:31 +09:00 committed by Paul Mundt
parent 7fdda6780a
commit 3a7b802d1a
2 changed files with 65 additions and 0 deletions
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58
arch/arm/mach-shmobile/board-g3evm.c
View File

@ -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));

7
arch/arm/mach-shmobile/clock-sh7367.c
View File

@ -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,
}
};