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authorPeng Fan <Peng.Fan@freescale.com>2015-03-10 15:05:10 +0800
committerPeng Fan <Peng.Fan@freescale.com>2015-04-29 15:00:32 +0800
commiteefcd91b30a0ee7ae2f0f3d03d4f4e667374443b (patch)
treed79e3b140ff257a3da4a39e028e32e7d46c65f52 /arch/arm/cpu
parentb7f153c8b55c4ccccf792de9dd63ece243c72435 (diff)
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MLK-10774-33 imx:mx6 add udc and fastboot support
Add udc and fastboot support We did not use the upstream way. Currently use CI_UDC and USB_GAGDET of upstream can make fastboot work, but lack of flash operation, so we still use our way. Signed-off-by: Peng Fan <Peng.Fan@freescale.com> Signed-off-by: Nitin Garg <nitin.garg@freescale.com> Signed-off-by: Ye.Li <B37916@freescale.com>
Diffstat (limited to 'arch/arm/cpu')
-rw-r--r--arch/arm/cpu/armv7/mx6/soc.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
index 7bd2118..d81dd1a 100644
--- a/arch/arm/cpu/armv7/mx6/soc.c
+++ b/arch/arm/cpu/armv7/mx6/soc.c
@@ -24,6 +24,15 @@
#include <asm/arch/crm_regs.h>
#include <dm.h>
#include <imx_thermal.h>
+#ifdef CONFIG_FASTBOOT
+#ifdef CONFIG_ANDROID_RECOVERY
+#include <recovery.h>
+#endif
+#endif
+#ifdef CONFIG_IMX_UDC
+#include <asm/arch/mx6_usbphy.h>
+#include <usb/imx_udc.h>
+#endif
enum ldo_reg {
LDO_ARM,
@@ -977,3 +986,97 @@ void v7_outer_cache_disable(void)
clrbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);
}
#endif /* !CONFIG_SYS_L2CACHE_OFF */
+
+#ifdef CONFIG_FASTBOOT
+
+#ifdef CONFIG_ANDROID_RECOVERY
+#define ANDROID_RECOVERY_BOOT (1 << 7)
+/* check if the recovery bit is set by kernel, it can be set by kernel
+ * issue a command '# reboot recovery' */
+int recovery_check_and_clean_flag(void)
+{
+ int flag_set = 0;
+ u32 reg;
+ reg = readl(SNVS_BASE_ADDR + SNVS_LPGPR);
+
+ flag_set = !!(reg & ANDROID_RECOVERY_BOOT);
+ printf("check_and_clean: reg %x, flag_set %d\n", reg, flag_set);
+ /* clean it in case looping infinite here.... */
+ if (flag_set) {
+ reg &= ~ANDROID_RECOVERY_BOOT;
+ writel(reg, SNVS_BASE_ADDR + SNVS_LPGPR);
+ }
+
+ return flag_set;
+}
+#endif /*CONFIG_ANDROID_RECOVERY*/
+
+#define ANDROID_FASTBOOT_BOOT (1 << 8)
+/* check if the recovery bit is set by kernel, it can be set by kernel
+ * issue a command '# reboot fastboot' */
+int fastboot_check_and_clean_flag(void)
+{
+ int flag_set = 0;
+ u32 reg;
+
+ reg = readl(SNVS_BASE_ADDR + SNVS_LPGPR);
+
+ flag_set = !!(reg & ANDROID_FASTBOOT_BOOT);
+
+ /* clean it in case looping infinite here.... */
+ if (flag_set) {
+ reg &= ~ANDROID_FASTBOOT_BOOT;
+ writel(reg, SNVS_BASE_ADDR + SNVS_LPGPR);
+ }
+
+ return flag_set;
+}
+#endif /*CONFIG_FASTBOOT*/
+
+#ifdef CONFIG_IMX_UDC
+void set_usboh3_clk(void)
+{
+ udc_pins_setting();
+}
+
+void set_usb_phy1_clk(void)
+{
+ /* make sure pll3 is enable here */
+ struct mxc_ccm_reg *ccm_regs = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+
+ writel((BM_ANADIG_USB1_CHRG_DETECT_EN_B |
+ BM_ANADIG_USB1_CHRG_DETECT_CHK_CHRG_B),
+ &ccm_regs->usb1_chrg_detect_set);
+
+ writel(BM_ANADIG_USB1_PLL_480_CTRL_EN_USB_CLKS,
+ &ccm_regs->analog_usb1_pll_480_ctrl_set);
+}
+void enable_usb_phy1_clk(unsigned char enable)
+{
+ if (enable)
+ writel(BM_USBPHY_CTRL_CLKGATE,
+ USB_PHY0_BASE_ADDR + HW_USBPHY_CTRL_CLR);
+ else
+ writel(BM_USBPHY_CTRL_CLKGATE,
+ USB_PHY0_BASE_ADDR + HW_USBPHY_CTRL_SET);
+}
+
+void reset_usb_phy1(void)
+{
+ /* Reset USBPHY module */
+ u32 temp;
+ temp = readl(USB_PHY0_BASE_ADDR + HW_USBPHY_CTRL);
+ temp |= BM_USBPHY_CTRL_SFTRST;
+ writel(temp, USB_PHY0_BASE_ADDR + HW_USBPHY_CTRL);
+ udelay(10);
+
+ /* Remove CLKGATE and SFTRST */
+ temp = readl(USB_PHY0_BASE_ADDR + HW_USBPHY_CTRL);
+ temp &= ~(BM_USBPHY_CTRL_CLKGATE | BM_USBPHY_CTRL_SFTRST);
+ writel(temp, USB_PHY0_BASE_ADDR + HW_USBPHY_CTRL);
+ udelay(10);
+
+ /* Power up the PHY */
+ writel(0, USB_PHY0_BASE_ADDR + HW_USBPHY_PWD);
+}
+#endif