If configured to use UART{1,2,4,5}, such as on the Beaglebone RS232 cape, enable the required clocks for the UART in use.
Signed-off-by: Andrew Bradford andrew@bradfordembedded.com --- arch/arm/cpu/armv7/am33xx/clock.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+)
diff --git a/arch/arm/cpu/armv7/am33xx/clock.c b/arch/arm/cpu/armv7/am33xx/clock.c index 2b19506..4eb9226 100644 --- a/arch/arm/cpu/armv7/am33xx/clock.c +++ b/arch/arm/cpu/armv7/am33xx/clock.c @@ -114,6 +114,34 @@ static void enable_per_clocks(void) while (readl(&cmwkup->wkup_uart0ctrl) != PRCM_MOD_EN) ;
+ /* UART1 */ +#ifdef CONFIG_SERIAL2 + writel(PRCM_MOD_EN, &cmper->uart1clkctrl); + while (readl(&cmper->uart1clkctrl) != PRCM_MOD_EN) + ; +#endif /* CONFIG_SERIAL2 */ + + /* UART2 */ +#ifdef CONFIG_SERIAL3 + writel(PRCM_MOD_EN, &cmper->uart2clkctrl); + while (readl(&cmper->uart2clkctrl) != PRCM_MOD_EN) + ; +#endif /* CONFIG_SERIAL3 */ + + /* UART4 */ +#ifdef CONFIG_SERIAL5 + writel(PRCM_MOD_EN, &cmper->uart4clkctrl); + while (readl(&cmper->uart4clkctrl) != PRCM_MOD_EN) + ; +#endif /* CONFIG_SERIAL5 */ + + /* UART5 */ +#ifdef CONFIG_SERIAL6 + writel(PRCM_MOD_EN, &cmper->uart5clkctrl); + while (readl(&cmper->uart5clkctrl) != PRCM_MOD_EN) + ; +#endif /* CONFIG_SERIAL6 */ + /* MMC0*/ writel(PRCM_MOD_EN, &cmper->mmc0clkctrl); while (readl(&cmper->mmc0clkctrl) != PRCM_MOD_EN)