RK3188 USB: disable usb bypass uart function in standby, reduce power consumption

diff --git a/arch/arm/mach-rk30/pm.c b/arch/arm/mach-rk30/pm.c
index 2ad5e41c0a48ca2a454e15cd80c9dea59fd257bf..d27b1c67c6dae80425884a93e55fad4985ae1dbd 100755 (executable)
--- a/arch/arm/mach-rk30/pm.c
+++ b/arch/arm/mach-rk30/pm.c
@@ -457,6 +457,7 @@ static void __sramfunc rk30_sram_suspend(void)
        u32 cru_clksel0_con, cru_clksel10_con;
        u32 clkgt_regs[CRU_CLKGATES_CON_CNT];
        u32 cru_mode_con;
+       u32 grf_uoc0_con0_status;
        int i;
        
        sram_printch('5');
@@ -469,6 +470,13 @@ static void __sramfunc rk30_sram_suspend(void)
        board_act8846_set_suspend_vol();
        #endif
 
+#if defined(CONFIG_ARCH_RK3188) && (CONFIG_RK_DEBUG_UART == 2)
+#ifdef CONFIG_RK_USB_UART
+       grf_uoc0_con0_status = grf_readl(GRF_UOC0_CON0);
+       grf_writel(0x03000000, GRF_UOC0_CON0);
+#endif
+#endif
+
        for (i = 0; i < CRU_CLKGATES_CON_CNT; i++) {
                clkgt_regs[i] = cru_readl(CRU_CLKGATES_CON(i));
        }
@@ -555,6 +563,13 @@ static void __sramfunc rk30_sram_suspend(void)
        #ifdef CONFIG_ACT8846_SUPPORT_RESET
        board_act8846_set_resume_vol();
        #endif
+
+#if defined(CONFIG_ARCH_RK3188) && (CONFIG_RK_DEBUG_UART == 2)
+#ifdef CONFIG_RK_USB_UART
+       grf_writel(0x03000000 | grf_uoc0_con0_status, GRF_UOC0_CON0);
+#endif
+#endif
+
        sram_printch('7');
        rk30_pwm_logic_resume_voltage();
        rk30_suspend_voltage_resume(1100000);