summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorRajeshwari Shinde <rajeshwari.s@samsung.com>2012-05-14 05:52:02 +0000
committerMarek Vasut <marex@denx.de>2012-07-09 18:27:55 +0200
commit71045da8122c15ffa6cd31079f33b68f2a66b3e5 (patch)
tree0668c6962fc9e1710fbf4901c0295eb3c792ca64
parentf9c4e04be712633d453bdf5c871966dea99243f6 (diff)
downloadu-boot-imx-71045da8122c15ffa6cd31079f33b68f2a66b3e5.zip
u-boot-imx-71045da8122c15ffa6cd31079f33b68f2a66b3e5.tar.gz
u-boot-imx-71045da8122c15ffa6cd31079f33b68f2a66b3e5.tar.bz2
USB: EXYNOS: Set USB 2.0 HOST Link mode
This patch adds a function to set usb host mode to USB 2.0 HOST Link for EXYNOS5 Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
-rw-r--r--arch/arm/cpu/armv7/exynos/system.c22
-rw-r--r--arch/arm/include/asm/arch-exynos/system.h3
-rw-r--r--drivers/usb/host/ehci-exynos.c3
3 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/exynos/system.c b/arch/arm/cpu/armv7/exynos/system.c
index 6c34730..cc6ee03 100644
--- a/arch/arm/cpu/armv7/exynos/system.c
+++ b/arch/arm/cpu/armv7/exynos/system.c
@@ -25,6 +25,28 @@
#include <asm/io.h>
#include <asm/arch/system.h>
+static void exynos5_set_usbhost_mode(unsigned int mode)
+{
+ struct exynos5_sysreg *sysreg =
+ (struct exynos5_sysreg *)samsung_get_base_sysreg();
+ unsigned int phy_cfg;
+
+ /* Setting USB20PHY_CONFIG register to USB 2.0 HOST link */
+ if (mode == USB20_PHY_CFG_HOST_LINK_EN) {
+ setbits_le32(&sysreg->usb20phy_cfg,
+ USB20_PHY_CFG_HOST_LINK_EN);
+ } else {
+ clrbits_le32(&sysreg->usb20phy_cfg,
+ USB20_PHY_CFG_HOST_LINK_EN);
+ }
+}
+
+void set_usbhost_mode(unsigned int mode)
+{
+ if (cpu_is_exynos5())
+ exynos5_set_usbhost_mode(mode);
+}
+
static void exynos4_set_system_display(void)
{
struct exynos4_sysreg *sysreg =
diff --git a/arch/arm/include/asm/arch-exynos/system.h b/arch/arm/include/asm/arch-exynos/system.h
index c1d880f..42e1d21 100644
--- a/arch/arm/include/asm/arch-exynos/system.h
+++ b/arch/arm/include/asm/arch-exynos/system.h
@@ -49,6 +49,9 @@ struct exynos5_sysreg {
};
#endif
+#define USB20_PHY_CFG_HOST_LINK_EN (1 << 0)
+
+void set_usbhost_mode(unsigned int mode);
void set_system_display_ctrl(void);
#endif /* _EXYNOS4_SYSTEM_H */
diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
index 3830c43..90d66d3 100644
--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -24,12 +24,15 @@
#include <usb.h>
#include <asm/arch/cpu.h>
#include <asm/arch/ehci.h>
+#include <asm/arch/system.h>
#include "ehci.h"
#include "ehci-core.h"
/* Setup the EHCI host controller. */
static void setup_usb_phy(struct exynos_usb_phy *usb)
{
+ set_usbhost_mode(USB20_PHY_CFG_HOST_LINK_EN);
+
clrbits_le32(&usb->usbphyctrl0,
HOST_CTRL0_FSEL_MASK |
HOST_CTRL0_COMMONON_N |