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am33xx: Enable UART{1,2,3,4,5} clocks

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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>
This commit is contained in:
Andrew Bradford 2012-10-25 08:21:29 -04:00 committed by Tom Rini
parent c7d35bef25
commit 25164218b7
1 changed files with 35 additions and 0 deletions
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35
arch/arm/cpu/armv7/am33xx/clock.c
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@ -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)