diff options
| author | Lucas Stach <l.stach@pengutronix.de> | 2015-09-21 19:54:04 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2015-09-26 07:59:06 +0300 |
| commit | 1b9af68f325cb91ac9fc691f52d69dfb0826afd7 (patch) | |
| tree | 9a85b30f63ebb0e7de37f61fe9fa3fb8ad01f6ad | |
| parent | 0822f933735c1eee6adfc236c72f763f42ac0f3d (diff) | |
| download | linux-1b9af68f325cb91ac9fc691f52d69dfb0826afd7.tar.xz | |
clk: imx7d: 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>
| -rw-r--r-- | drivers/clk/imx/clk-imx7d.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/clk/imx/clk-imx7d.c b/drivers/clk/imx/clk-imx7d.c index 71f3a94b472c..f86b68049872 100644 --- a/drivers/clk/imx/clk-imx7d.c +++ b/drivers/clk/imx/clk-imx7d.c @@ -363,6 +363,17 @@ static const char *pll_video_bypass_sel[] = { "pll_video_main", "pll_video_main_ static struct clk_onecell_data clk_data; +static struct clk ** const uart_clks[] __initconst = { + &clks[IMX7D_UART1_ROOT_CLK], + &clks[IMX7D_UART2_ROOT_CLK], + &clks[IMX7D_UART3_ROOT_CLK], + &clks[IMX7D_UART4_ROOT_CLK], + &clks[IMX7D_UART5_ROOT_CLK], + &clks[IMX7D_UART6_ROOT_CLK], + &clks[IMX7D_UART7_ROOT_CLK], + NULL +}; + static void __init imx7d_clocks_init(struct device_node *ccm_node) { struct device_node *np; @@ -856,5 +867,7 @@ static void __init imx7d_clocks_init(struct device_node *ccm_node) /* set uart module clock's parent clock source that must be great then 80MHz */ clk_set_parent(clks[IMX7D_UART1_ROOT_SRC], clks[IMX7D_OSC_24M_CLK]); + imx_register_uart_clocks(uart_clks); + } CLK_OF_DECLARE(imx7d, "fsl,imx7d-ccm", imx7d_clocks_init); |