[PATCH AUTOSEL 4.9 232/251] clk: samsung: exynos5420: Preserve CPU clocks configuration during suspend/resume
From: Sasha Levin <sashal@kernel.org>
Date: 2020-01-16 18:00:05
Also in:
linux-clk, linux-samsung-soc, lkml, stable
Subsystem:
common clk framework, samsung soc clock drivers, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Krzysztof Kozlowski, Sylwester Nawrocki, Chanwoo Choi, Peter Griffin, Linus Torvalds
From: Marian Mihailescu <redacted>
[ Upstream commit e21be0d1d7bd7f78a77613f6bcb6965e72b22fc1 ]
Save and restore top PLL related configuration registers for big (APLL)
and LITTLE (KPLL) cores during suspend/resume cycle. So far, CPU clocks
were reset to default values after suspend/resume cycle and performance
after system resume was affected when performance governor has been selected.
Fixes: 773424326b51 ("clk: samsung: exynos5420: add more registers to restore list")
Signed-off-by: Marian Mihailescu <redacted>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/clk/samsung/clk-exynos5420.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c
index 2bb88d125113..7f8c7cf3c2ab 100644
--- a/drivers/clk/samsung/clk-exynos5420.c
+++ b/drivers/clk/samsung/clk-exynos5420.c@@ -170,6 +170,8 @@ static const unsigned long exynos5x_clk_regs[] __initconst = { GATE_BUS_CPU, GATE_SCLK_CPU, CLKOUT_CMU_CPU, + APLL_CON0, + KPLL_CON0, CPLL_CON0, DPLL_CON0, EPLL_CON0,
--
2.20.1
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