[PATCH] ARM: imx35: don't disable the uart clock when DEBUG_LL is in use

[Uwe Kleine-König]

Otherwise printch et al. and printk with earlyprintk and keep_bootcon
becomes unfunctional when the clk framework disables all unused clocks.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
---
 arch/arm/mach-imx/clk-imx35.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/mach-imx/clk-imx35.c b/arch/arm/mach-imx/clk-imx35.c
index c6422fb..83d614c 100644
--- a/arch/arm/mach-imx/clk-imx35.c
+++ b/arch/arm/mach-imx/clk-imx35.c
@@ -271,6 +271,10 @@ int __init mx35_clocks_init()
 	 */
 	clk_prepare_enable(clk[scc_gate]);
 
+	/* Assert that the UART clock keeps running if DEBUG_LL is in use */
+	if (IS_ENABLED(CONFIG_DEBUG_IMX31_IMX35_UART))
+		clk_prepare_enable(clk[uart1_gate]);
+
 	imx_print_silicon_rev("i.MX35", mx35_revision());
 
 #ifdef CONFIG_MXC_USE_EPIT
-- 
1.7.10.4