[U-Boot] [PATCH v3 1/4] am33xx: Enable UART{1,2,3,4,5} clocks

[Andrew Bradford]

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 at 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