[PATCH v4 5/8] clk: imx35: retain early UART clocks during kernel init
From: l.stach@pengutronix.de (Lucas Stach)
Date: 2015-09-21 16:54:01
Also in:
linux-clk
Subsystem:
common clk framework, nxp i.mx clock drivers, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Abel Vesa, Linus Torvalds
Make sure to keep UART clocks enabled during kernel init if earlyprintk or earlycon are active. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> --- drivers/clk/imx/clk-imx35.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/clk/imx/clk-imx35.c b/drivers/clk/imx/clk-imx35.c
index 8623cd4e49fd..ba8b33328a8d 100644
--- a/drivers/clk/imx/clk-imx35.c
+++ b/drivers/clk/imx/clk-imx35.c@@ -84,6 +84,14 @@ enum mx35_clks { static struct clk *clk[clk_max]; +static struct clk ** const uart_clks[] __initconst = { + &clk[ipg], + &clk[uart1_gate], + &clk[uart2_gate], + &clk[uart3_gate], + NULL +}; + int __init mx35_clocks_init(void) { void __iomem *base;
@@ -296,6 +304,8 @@ int __init mx35_clocks_init(void) */ clk_prepare_enable(clk[scc_gate]); + imx_register_uart_clocks(uart_clks); + imx_print_silicon_rev("i.MX35", mx35_revision()); mxc_timer_init(MX35_GPT1_BASE_ADDR, MX35_INT_GPT, GPT_TYPE_IMX31);
--
2.5.1