diff options
| author | Lucas Stach <l.stach@pengutronix.de> | 2015-09-21 19:53:59 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2015-09-26 07:58:50 +0300 |
| commit | 6f1871316347a5ef098d85305d5eb5ac6ac1f52a (patch) | |
| tree | 22f185dea27975a984370ea62b2c6088db79150d /drivers/clk/imx/clk-imx27.c | |
| parent | 517c7f9302efdde86fe8ebca80bc9ef826fa62e5 (diff) | |
| download | linux-6f1871316347a5ef098d85305d5eb5ac6ac1f52a.tar.xz | |
clk: imx27: retain early UART clocks during kernel init
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>
Diffstat (limited to 'drivers/clk/imx/clk-imx27.c')
| -rw-r--r-- | drivers/clk/imx/clk-imx27.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/clk/imx/clk-imx27.c b/drivers/clk/imx/clk-imx27.c index d9d50d54ef2a..0d7b8df04dfa 100644 --- a/drivers/clk/imx/clk-imx27.c +++ b/drivers/clk/imx/clk-imx27.c @@ -47,6 +47,17 @@ static const char *ssi_sel_clks[] = { "spll_gate", "mpll", }; static struct clk *clk[IMX27_CLK_MAX]; static struct clk_onecell_data clk_data; +static struct clk ** const uart_clks[] __initconst = { + &clk[IMX27_CLK_PER1_GATE], + &clk[IMX27_CLK_UART1_IPG_GATE], + &clk[IMX27_CLK_UART2_IPG_GATE], + &clk[IMX27_CLK_UART3_IPG_GATE], + &clk[IMX27_CLK_UART4_IPG_GATE], + &clk[IMX27_CLK_UART5_IPG_GATE], + &clk[IMX27_CLK_UART6_IPG_GATE], + NULL +}; + static void __init _mx27_clocks_init(unsigned long fref) { BUG_ON(!ccm); @@ -163,6 +174,8 @@ static void __init _mx27_clocks_init(unsigned long fref) clk_prepare_enable(clk[IMX27_CLK_EMI_AHB_GATE]); + imx_register_uart_clocks(uart_clks); + imx_print_silicon_rev("i.MX27", mx27_revision()); } |