Hi,
with the patch below I get the same behavior as Jerry: Only once after
reset command "usb" shows HI-Devices (Joystick, Mouse, ...). Jerry, do
you have made any progress on this?
The clock settings seems to be the same as for eukrea_cpuimx35. Eric:
Does USB work for you on your board?
Sascha, I currently have no working config for kernel >=3.5 to check for
clocks in debugfs.
Any thoughts on this?
Thanks
-- Christoph
>From 2cec5266d1ae9ea141c6743accab9d1cb0ced7fc Mon Sep 17 00:00:00 2001
From: Christoph Fritz <chf.fritz@xxxxxxxxxxxxxx>
Date: Wed, 1 Aug 2012 11:32:17 +0200
Subject: [PATCH] pcm043: usb support --not working--
---
arch/arm/boards/pcm043/lowlevel.c | 6 ++++++
arch/arm/boards/pcm043/pcm043.c | 33 +++++++++++++++++++++++++++++++++
2 files changed, 39 insertions(+), 0 deletions(-)
diff --git a/arch/arm/boards/pcm043/lowlevel.c b/arch/arm/boards/pcm043/lowlevel.c
index efb5441..cec25b2 100644
--- a/arch/arm/boards/pcm043/lowlevel.c
+++ b/arch/arm/boards/pcm043/lowlevel.c
@@ -196,6 +196,12 @@ void __bare_init __naked board_init_lowlevel(void)
r |= 0x00000003;
writel(r, ccm_base + CCM_CGR1);
+ /* enable USBOTG clock */
+ r = readl(ccm_base + CCM_CGR2);
+ r |= 0x3 << CCM_CGR2_USB_SHIFT;
+ r |= 0x3 << 26;
+ writel(r, ccm_base + CCM_CGR2);
+
r = readl(IMX_L2CC_BASE + L2X0_AUX_CTRL);
r |= 0x1000;
writel(r, IMX_L2CC_BASE + L2X0_AUX_CTRL);
diff --git a/arch/arm/boards/pcm043/pcm043.c b/arch/arm/boards/pcm043/pcm043.c
index 9136bb3..06bf36b 100644
--- a/arch/arm/boards/pcm043/pcm043.c
+++ b/arch/arm/boards/pcm043/pcm043.c
@@ -46,6 +46,7 @@
#include <mach/imx-pll.h>
#include <mach/iomux-mx35.h>
#include <mach/devices-imx35.h>
+#include <mach/usb.h>
static struct fec_platform_data fec_info = {
.xcv_type = MII100,
@@ -94,6 +95,30 @@ static struct fb_videomode pcm043_fb_mode[] = {
}
};
+#ifdef CONFIG_USB
+static void imx35_usb_init(void)
+{
+ unsigned int tmp;
+
+ /* Host 1 */
+ tmp = readl(IMX_OTG_BASE + 0x600);
+ tmp &= ~(MX35_H1_SIC_MASK | MX35_H1_PM_BIT | MX35_H1_TLL_BIT |
+ MX35_H1_USBTE_BIT | MX35_H1_IPPUE_DOWN_BIT | MX35_H1_IPPUE_UP_BIT);
+ tmp |= (MXC_EHCI_INTERFACE_SINGLE_UNI) << MX35_H1_SIC_SHIFT;
+ tmp |= MX35_H1_USBTE_BIT;
+ tmp |= MX35_H1_IPPUE_DOWN_BIT;
+ writel(tmp, IMX_OTG_BASE + 0x600);
+
+ tmp = readl(IMX_OTG_BASE + 0x584);
+ tmp |= 3 << 30;
+ writel(tmp, IMX_OTG_BASE + 0x584);
+
+ /* Set to Host mode */
+ tmp = readl(IMX_OTG_BASE + 0x5a8);
+ writel(tmp | 0x3, IMX_OTG_BASE + 0x5a8);
+}
+#endif
+
static struct imx_ipu_fb_platform_data ipu_fb_data = {
.mode = pcm043_fb_mode,
.num_modes = ARRAY_SIZE(pcm043_fb_mode),
@@ -101,6 +126,7 @@ static struct imx_ipu_fb_platform_data ipu_fb_data = {
.bpp = 16,
};
+
static int pcm043_mem_init(void)
{
arm_add_mem_device("ram0", IMX_SDRAM_CS0, SZ_128M);
@@ -173,6 +199,11 @@ static int imx35_devices_init(void)
imx35_add_fb(&ipu_fb_data);
+#ifdef CONFIG_USB
+ imx35_usb_init();
+ add_generic_usb_ehci_device(DEVICE_ID_DYNAMIC, IMX_OTG_BASE + 0x400, NULL);
+#endif
+
armlinux_set_bootparams((void *)0x80000100);
armlinux_set_architecture(MACH_TYPE_PCM043);
@@ -209,6 +240,8 @@ static iomux_v3_cfg_t pcm043_pads[] = {
MX35_PAD_I2C1_CLK__I2C1_SCL,
MX35_PAD_I2C1_DAT__I2C1_SDA,
MX35_PAD_ATA_CS0__GPIO2_6, /* LED */
+ MX35_PAD_I2C2_CLK__USB_TOP_USBH2_PWR,
+ MX35_PAD_I2C2_DAT__USB_TOP_USBH2_OC,
};
static int imx35_console_init(void)
--
1.7.2.5
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