From: Marek Szyprowski m.szyprowski@samsung.com
[ Upstream commit e9323b664ce29547d996195e8a6129a351c39108 ]
Properly save and restore all top PLL related configuration registers during suspend/resume cycle. So far driver only handled EPLL and RPLL clocks, all other were reset to default values after suspend/resume cycle. This caused for example lower G3D (MALI Panfrost) performance after system resume, even if performance governor has been selected.
Reported-by: Reported-by: Marian Mihailescu mihailescu2m@gmail.com Fixes: 773424326b51 ("clk: samsung: exynos5420: add more registers to restore list") Signed-off-by: Marek Szyprowski m.szyprowski@samsung.com Signed-off-by: Sylwester Nawrocki s.nawrocki@samsung.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/samsung/clk-exynos5420.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c index 13c09a740840b..2bb88d1251136 100644 --- a/drivers/clk/samsung/clk-exynos5420.c +++ b/drivers/clk/samsung/clk-exynos5420.c @@ -170,12 +170,18 @@ static const unsigned long exynos5x_clk_regs[] __initconst = { GATE_BUS_CPU, GATE_SCLK_CPU, CLKOUT_CMU_CPU, + CPLL_CON0, + DPLL_CON0, EPLL_CON0, EPLL_CON1, EPLL_CON2, RPLL_CON0, RPLL_CON1, RPLL_CON2, + IPLL_CON0, + SPLL_CON0, + VPLL_CON0, + MPLL_CON0, SRC_TOP0, SRC_TOP1, SRC_TOP2,