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| author | Peng Fan <peng.fan@nxp.com> | 2020-03-16 16:32:33 +0800 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2020-04-14 21:35:58 +0800 |
| commit | 260dab4478f60d02a77692c803ea1ff33261843e (patch) | |
| tree | bbdc467744061a04dc167ae599bada0e7179ecf0 /include | |
| parent | d5b2b22558f1a265ea8e88e5a54fc61ae7da3355 (diff) | |
| download | linux-260dab4478f60d02a77692c803ea1ff33261843e.tar.bz2 | |
clk: imx7ulp: make it easy to change ARM core clk
ARM clk could only source from divcore or hsrun_divcore.
Follow what we already used on i.MX7D and i.MX8M SoCs, use
imx_clk_hw_cpu API. When ARM core is running normaly,
whether divcore or hwrun_divcore will finally source
from SPLL_PFD0. However SPLL_PFD0 is marked with CLK_SET_GATE,
so we need to disable SPLL_PFD0, when configure the rate.
So add CORE and HSRUN_CORE virtual clk to make it easy to
configure the clk using imx_clk_hw_cpu API.
Since CORE and HSRUN_CORE already marked with CLK_IS_CRITICAL, no
need to set ARM as CLK_IS_CRITICAL. And when set the rate of ARM clk,
prograting it the parent with CLK_SET_RATE_PARENT will finally set
the SPLL_PFD0 clk.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/dt-bindings/clock/imx7ulp-clock.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/dt-bindings/clock/imx7ulp-clock.h b/include/dt-bindings/clock/imx7ulp-clock.h index 38145bdcd975..b58370d146e2 100644 --- a/include/dt-bindings/clock/imx7ulp-clock.h +++ b/include/dt-bindings/clock/imx7ulp-clock.h @@ -58,7 +58,10 @@ #define IMX7ULP_CLK_HSRUN_SYS_SEL 44 #define IMX7ULP_CLK_HSRUN_CORE_DIV 45 -#define IMX7ULP_CLK_SCG1_END 46 +#define IMX7ULP_CLK_CORE 46 +#define IMX7ULP_CLK_HSRUN_CORE 47 + +#define IMX7ULP_CLK_SCG1_END 48 /* PCC2 */ #define IMX7ULP_CLK_DMA1 0 |