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 <andrew@bradfordembedded.com>

diff --git a/arch/arm/cpu/armv7/am33xx/clock.c b/arch/arm/cpu/armv7/am33xx/clock.c
index f870859414440628536554d6fba47918a087f428..bc2abb657cf3d54a6dcc5fc4b2a7dd67b0131b33 100644 (file)
--- 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)