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clk: imx35: retain early UART clocks during kernel init

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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>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Lucas Stach 2015-09-21 18:54:01 +02:00 committed by Shawn Guo
parent 5c678cdd02
commit 57d5a4c3ed
1 changed files with 10 additions and 0 deletions
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10
drivers/clk/imx/clk-imx35.c
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@ -84,6 +84,14 @@ enum mx35_clks {
static struct clk *clk[clk_max]; 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
};
static void __init _mx35_clocks_init(void) static void __init _mx35_clocks_init(void)
{ {
void __iomem *base; void __iomem *base;
@ -237,6 +245,8 @@ static void __init _mx35_clocks_init(void)
*/ */
clk_prepare_enable(clk[scc_gate]); clk_prepare_enable(clk[scc_gate]);
imx_register_uart_clocks(uart_clks);
imx_print_silicon_rev("i.MX35", mx35_revision()); imx_print_silicon_rev("i.MX35", mx35_revision());
} }