[PATCH v3 2/8] clk: imx25: retain early UART clocks during kernel init
From: l.stach@pengutronix.de (Lucas Stach)
Date: 2015-09-07 15:09:27
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-imx25.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/clk/imx/clk-imx25.c b/drivers/clk/imx/clk-imx25.c
index ec1a4c1dacf1..c4c141cab444 100644
--- a/drivers/clk/imx/clk-imx25.c
+++ b/drivers/clk/imx/clk-imx25.c@@ -86,6 +86,16 @@ enum mx25_clks { static struct clk *clk[clk_max]; +static struct clk ** const uart_clks[] __initconst = { + &clk[uart_ipg_per], + &clk[uart1_ipg], + &clk[uart2_ipg], + &clk[uart3_ipg], + &clk[uart4_ipg], + &clk[uart5_ipg], + NULL +}; + static int __init __mx25_clocks_init(unsigned long osc_rate, void __iomem *ccm_base) {
@@ -233,6 +243,8 @@ static int __init __mx25_clocks_init(unsigned long osc_rate, */ clk_set_parent(clk[cko_sel], clk[ipg]); + imx_register_uart_clocks(uart_clks); + return 0; }
--
2.5.0