diff options
| author | Peng Fan <peng.fan@nxp.com> | 2020-11-01 12:23:54 +0100 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2020-11-05 02:13:12 +0100 |
| commit | c277ca155d2f0028a5c79708426d3f79b54a5fc1 (patch) | |
| tree | 21bbb33da3f32f2f920492e9bb85f4bdb4e7b6f0 /drivers/clk/imx/clk.h | |
| parent | clk: define to_clk_regmap() as inline function (diff) | |
| download | linux-c277ca155d2f0028a5c79708426d3f79b54a5fc1.tar.xz linux-c277ca155d2f0028a5c79708426d3f79b54a5fc1.zip | |
clk: imx8m: fix bus critical clk registration
noc/axi/ahb are bus clk, not peripheral clk.
Since peripheral clk has a limitation that for peripheral clock slice,
IP clock slices must be stopped to change the clock source.
However if the bus clk is marked as critical clk peripheral, the
assigned clock parent operation will fail.
So we added CLK_SET_PARENT_GATE flag to avoid glitch.
And add imx8m_clk_hw_composite_bus_critical for bus critical clock usage
Fixes: 936c383673b9e ("clk: imx: fix composite peripheral flags")
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Reported-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/1604229834-25594-1-git-send-email-peng.fan@nxp.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/imx/clk.h')
| -rw-r--r-- | drivers/clk/imx/clk.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index 3b796b3da249..1d7be0c86538 100644 --- a/drivers/clk/imx/clk.h +++ b/drivers/clk/imx/clk.h @@ -549,6 +549,11 @@ struct clk_hw *imx8m_clk_hw_composite_flags(const char *name, IMX_COMPOSITE_BUS, \ CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE) +#define imx8m_clk_hw_composite_bus_critical(name, parent_names, reg) \ + imx8m_clk_hw_composite_flags(name, parent_names, ARRAY_SIZE(parent_names), reg, \ + IMX_COMPOSITE_BUS, \ + CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE | CLK_IS_CRITICAL) + #define imx8m_clk_hw_composite_core(name, parent_names, reg) \ imx8m_clk_hw_composite_flags(name, parent_names, \ ARRAY_SIZE(parent_names), reg, \ |