From 25164218b7c2abc3316c2a3ba7247487b4c81541 Mon Sep 17 00:00:00 2001 From: Andrew Bradford Date: Thu, 25 Oct 2012 08:21:29 -0400 Subject: am33xx: Enable UART{1,2,3,4,5} clocks If configured to use UART{1,2,3,4,5} such as on the Beaglebone RS232 cape or the am335x_evm daughterboard, enable the required clocks for the UART in use. Signed-off-by: Andrew Bradford --- arch/arm/cpu/armv7/am33xx/clock.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/cpu/armv7/am33xx/clock.c b/arch/arm/cpu/armv7/am33xx/clock.c index f870859..bc2abb6 100644 --- a/arch/arm/cpu/armv7/am33xx/clock.c +++ b/arch/arm/cpu/armv7/am33xx/clock.c @@ -115,6 +115,41 @@ 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 */ + + /* UART3 */ +#ifdef CONFIG_SERIAL4 + writel(PRCM_MOD_EN, &cmper->uart3clkctrl); + while (readl(&cmper->uart3clkctrl) != PRCM_MOD_EN) + ; +#endif /* CONFIG_SERIAL4 */ + + /* 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) -- cgit v1.1