UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

clk: imx: Add 'CLK_SET_RATE_NO_REPARENT' for composite-7ulp 

For the imx_composite-7ulp clock type, The clock parent should
be changed explicitly by end user of this clock, if the the
'CLK_SET_RATE_NO_REPARENT' flag is not set, when user want to
set a clock frequency that can NOT get from HW accurately, then
the clock's parent will be switch to another clock parent sometimes.
This is NOT what we expected and introduced some additional debug
effort, so add the 'CLK_SET_RATE_NO_REPARENT' to avoid such unexpected
result.

Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Link: https://lore.kernel.org/r/20210914065208.3582128-6-ping.bai@nxp.com
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
This commit is contained in:
Jacky Bai 2021-09-14 14:52:04 +08:00 committed by Abel Vesa
parent 0f6e3c15ec
commit 75c6f1a019
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/clk/imx/clk-composite-7ulp.c
View File

@ -131,7 +131,7 @@ static struct clk_hw *imx_ulp_clk_hw_composite(const char *name,
mux_hw, &clk_mux_ops, fd_hw,
&clk_fractional_divider_ops, gate_hw,
has_swrst ? &pcc_gate_ops : &clk_gate_ops, CLK_SET_RATE_GATE |
CLK_SET_PARENT_GATE);
CLK_SET_PARENT_GATE | CLK_SET_RATE_NO_REPARENT);
if (IS_ERR(hw)) {
kfree(mux);
kfree(fd);