From: Andrew Bradford <andrew@bradfordembedded.com>
Date: Thu, 25 Oct 2012 12:21:29 +0000 (-0400)
Subject: am33xx: Enable UART{1,2,3,4,5} clocks
X-Git-Tag: v2013.01-rc2~146^2~3^2~11
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=25164218b7c2abc3316c2a3ba7247487b4c81541;p=platform%2Fkernel%2Fu-boot.git

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 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)