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android_kernel_xiaomi_sm8450/drivers/clk/sunxi-ng
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Jernej Skrabec bfc78b4628 clk: sunxi-ng: h6: Reparent CPUX during PLL CPUX rate change 
[ Upstream commit 7e91ed763dc07437777bd012af7a2bd4493731ff ]

While PLL CPUX clock rate change when CPU is running from it works in
vast majority of cases, now and then it causes instability. This leads
to system crashes and other undefined behaviour. After a lot of testing
(30+ hours) while also doing a lot of frequency switches, we can't
observe any instability issues anymore when doing reparenting to stable
clock like 24 MHz oscillator.

Fixes: 524353ea48 ("clk: sunxi-ng: add support for the Allwinner H6 CCU")
Reported-by: Chad Wagner <wagnerch42@gmail.com>
Link: https://forum.libreelec.tv/thread/27295-orange-pi-3-lts-freezes/
Tested-by: Chad Wagner <wagnerch42@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20231013181712.2128037-1-jernej.skrabec@gmail.com
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-05-17 11:48:02 +02:00
..
ccu_common.c clk: sunxi: Don't call clk_hw_get_name() on a hw that isn't registered 2019-08-16 10:27:29 -07:00
ccu_common.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu_div.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ccu_div.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu_frac.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ccu_frac.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu_gate.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ccu_gate.h This round of clk driver and framework updates is heavy on the driver update 2019-07-17 10:07:48 -07:00
ccu_mmc_timing.c clk: sunxi-ng: Modify mismatched function name 2023-09-19 12:20:14 +02:00
ccu_mp.c clk: sunxi-ng: mp: fix parent rate change flag check 2021-02-17 11:02:28 +01:00
ccu_mp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu_mult.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ccu_mult.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ccu_mux.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ccu_mux.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ccu_nk.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ccu_nk.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu_nkm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ccu_nkm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu_nkmp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ccu_nkmp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu_nm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ccu_nm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu_phase.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ccu_phase.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu_reset.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ccu_reset.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu_sdm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ccu_sdm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu-sun4i-a10.c This round of clk driver and framework updates is heavy on the driver update 2019-07-17 10:07:48 -07:00
ccu-sun4i-a10.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
ccu-sun5i.c This round of clk driver and framework updates is heavy on the driver update 2019-07-17 10:07:48 -07:00
ccu-sun5i.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
ccu-sun6i-a31.c This round of clk driver and framework updates is heavy on the driver update 2019-07-17 10:07:48 -07:00
ccu-sun6i-a31.h clk: sunxi: a31: Export the MIPI PLL 2020-01-04 09:45:09 +01:00
ccu-sun8i-a23-a33.h clk: sunxi: a23/a33: Export the MIPI PLL 2020-01-04 09:45:19 +01:00
ccu-sun8i-a23.c This round of clk driver and framework updates is heavy on the driver update 2019-07-17 10:07:48 -07:00
ccu-sun8i-a33.c This round of clk driver and framework updates is heavy on the driver update 2019-07-17 10:07:48 -07:00
ccu-sun8i-a83t.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu-sun8i-a83t.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
ccu-sun8i-de2.c clk: sunxi-ng: sun8i-de2: Sort structures 2020-02-12 19:01:16 +01:00
ccu-sun8i-de2.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
ccu-sun8i-h3.c clk: sunxi-ng: Make sure divider tables have sentinel 2020-12-30 11:54:01 +01:00
ccu-sun8i-h3.h clk: sunxi-ng: h3: Export MBUS clock 2019-11-05 11:34:41 +01:00
ccu-sun8i-r40.c clk: sunxi-ng: sun8i: r40: Use sigma delta modulation for audio PLL 2020-08-25 16:42:55 +02:00
ccu-sun8i-r40.h clk: sunxi-ng: r40: Export MBUS clock 2020-01-03 10:37:14 +01:00
ccu-sun8i-r.c clk: sunxi-ng: sun8i-r: Fix divider on APB0 clock 2020-01-02 10:27:47 +01:00
ccu-sun8i-r.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
ccu-sun8i-v3s.c clk: sunxi-ng: v3s: Fix incorrect number of hw_clks. 2019-12-09 08:49:31 +01:00
ccu-sun8i-v3s.h clk: sunxi-ng: v3s: Fix incorrect number of hw_clks. 2019-12-09 08:49:31 +01:00
ccu-sun9i-a80-de.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ccu-sun9i-a80-de.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
ccu-sun9i-a80-usb.c This round of clk driver and framework updates is heavy on the driver update 2019-07-17 10:07:48 -07:00
ccu-sun9i-a80-usb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
ccu-sun9i-a80.c clk: sunxi-ng: a80: fix the zero'ing of bits 16 and 18 2019-10-29 08:42:52 +01:00
ccu-sun9i-a80.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
ccu-sun50i-a64.c clk: sunxi-ng: Make sure divider tables have sentinel 2020-12-30 11:54:01 +01:00
ccu-sun50i-a64.h clk: sunxi-ng: a64: Export MBUS clock 2020-02-11 07:49:14 +01:00
ccu-sun50i-a100-r.c clk: sunxi-ng: add support for the Allwinner A100 CCU 2020-08-25 10:52:18 +02:00
ccu-sun50i-a100-r.h clk: sunxi-ng: add support for the Allwinner A100 CCU 2020-08-25 10:52:18 +02:00
ccu-sun50i-a100.c clk: sunxi-ng: add support for the Allwinner A100 CCU 2020-08-25 10:52:18 +02:00
ccu-sun50i-a100.h clk: sunxi-ng: add support for the Allwinner A100 CCU 2020-08-25 10:52:18 +02:00
ccu-sun50i-h6-r.c clk: sunxi-ng: h6-r: Fix AR100/R_APB2 parent order 2020-01-02 10:28:47 +01:00
ccu-sun50i-h6-r.h clk: sunxi-ng: add support for H6 PRCM CCU 2018-05-04 17:05:46 +02:00
ccu-sun50i-h6.c clk: sunxi-ng: h6: Reparent CPUX during PLL CPUX rate change 2024-05-17 11:48:02 +02:00
ccu-sun50i-h6.h clk: sunxi-ng: Use the correct style for SPDX License Identifier 2019-05-01 13:01:26 -07:00
ccu-suniv-f1c100s.c clk: sunxi-ng: f1c100s: Use local parent references for CLK_FIXED_FACTOR 2019-06-22 10:13:16 +08:00
ccu-suniv-f1c100s.h clk: sunxi-ng: Use the correct style for SPDX License Identifier 2019-05-01 13:01:26 -07:00
Kconfig clk: sunxi-ng: add support for the Allwinner A100 CCU 2020-08-25 10:52:18 +02:00
Makefile clk: sunxi-ng: add support for the Allwinner A100 CCU 2020-08-25 10:52:18 +02:00