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 <and...@bradfordembedded.com>
---
Changes from v2:
No changes
Changes from v1:
Also enable UART3 clocks
arch/arm/cpu/armv7/am33xx/clock.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/arch/arm/cpu/armv7/am33xx/clock.c
b/arch/arm/cpu/armv7/am33xx/clock.c
index 2b19506..b34f969 100644
--- a/arch/arm/cpu/armv7/am33xx/clock.c
+++ b/arch/arm/cpu/armv7/am33xx/clock.c
@@ -114,6 +114,41 @@ 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)
--
1.7.10.4
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