diff options
Diffstat (limited to 'arch/arm/mach-imx/include/mach/imx7-ccm-regs.h')
| -rw-r--r-- | arch/arm/mach-imx/include/mach/imx7-ccm-regs.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/include/mach/imx7-ccm-regs.h b/arch/arm/mach-imx/include/mach/imx7-ccm-regs.h index b78adf9f1c..de6eb1bbd1 100644 --- a/arch/arm/mach-imx/include/mach/imx7-ccm-regs.h +++ b/arch/arm/mach-imx/include/mach/imx7-ccm-regs.h @@ -33,4 +33,16 @@ #define IMX7_CCM_CCGR_SETTINGn_NEEDED_RUN_WAIT(n) IMX7_CCM_CCGR_SETTINGn(n, 0b10) #define IMX7_CCM_CCGR_SETTINGn_NEEDED(n) IMX7_CCM_CCGR_SETTINGn(n, 0b11) +static inline void imx7_early_setup_uart_clock(void) +{ + void __iomem *ccm = IOMEM(MX7_CCM_BASE_ADDR); + + writel(IMX7_CCM_CCGR_SETTINGn_NEEDED(0), + ccm + IMX7_CCM_CCGRn_CLR(IMX7_CCM_CCGR_UART1)); + writel(IMX7_CCM_TARGET_ROOTn_ENABLE | IMX7_UART1_CLK_ROOT__OSC_24M, + ccm + IMX7_CCM_TARGET_ROOTn(IMX7_UART1_CLK_ROOT)); + writel(IMX7_CCM_CCGR_SETTINGn_NEEDED(0), + ccm + IMX7_CCM_CCGRn_SET(IMX7_CCM_CCGR_UART1)); +} + #endif |