Merge branch 'sf' of git://git.denx.de/u-boot-blackfin

[oweals/u-boot.git] / arch / arm / cpu / armv7 / tegra2 / clock.c

diff --git a/arch/arm/cpu/armv7/tegra2/clock.c b/arch/arm/cpu/armv7/tegra2/clock.c
index 03ac1e3ed0077d843e29e72a28f8077f73ef8b6b..11d2346d83b0fda80052b79f68ac3583779ba990 100644 (file)
--- a/arch/arm/cpu/armv7/tegra2/clock.c
+++ b/arch/arm/cpu/armv7/tegra2/clock.c
@@ -904,6 +904,20 @@ static int clock_set_rate(enum clock_id clkid, u32 n, u32 m, u32 p, u32 cpcon)
        return 0;
 }
 
+void clock_ll_start_uart(enum periph_id periph_id)
+{
+       /* Assert UART reset and enable clock */
+       reset_set_enable(periph_id, 1);
+       clock_enable(periph_id);
+       clock_ll_set_source(periph_id, 0); /* UARTx_CLK_SRC = 00, PLLP_OUT0 */
+
+       /* wait for 2us */
+       udelay(2);
+
+       /* De-assert reset to UART */
+       reset_set_enable(periph_id, 0);
+}
+
 int clock_verify(void)
 {
        struct clk_pll *pll = get_pll(CLOCK_ID_PERIPH);