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authorDmitry Osipenko <digetx@gmail.com>2020-03-19 22:02:23 +0300
committerThierry Reding <treding@nvidia.com>2020-05-06 19:50:36 +0300
commitd3c32c04adfdb6c646722dc5fde1a3d88f293fd4 (patch)
tree0325dbbef2a89bbe7a625ea10ab452f6eec5e0e6
parent35509737c8f958944e059d501255a0bf18361ba0 (diff)
downloadlinux-d3c32c04adfdb6c646722dc5fde1a3d88f293fd4.tar.xz
ARM: tegra: Switch CPU to PLLP on resume from LP1 on Tegra30/114/124
The early-resume code shall not switch CPU to PLLX because PLLX configuration could be unstable or PLLX should be simply disabled if CPU enters into suspend running off some other PLL (the case if CPUFREQ driver is active). The actual burst policy is restored by the clock drivers. Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com> Tested-by: Peter Geis <pgwipeout@gmail.com> Tested-by: Marcel Ziswiler <marcel@ziswiler.com> Tested-by: Jasper Korten <jja2000@gmail.com> Tested-by: David Heidelberg <david@ixit.cz> Tested-by: Nicolas Chauvet <kwizart@gmail.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
-rw-r--r--arch/arm/mach-tegra/sleep-tegra30.S7
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/arm/mach-tegra/sleep-tegra30.S b/arch/arm/mach-tegra/sleep-tegra30.S
index e7bcf7dc4675..9942265ed650 100644
--- a/arch/arm/mach-tegra/sleep-tegra30.S
+++ b/arch/arm/mach-tegra/sleep-tegra30.S
@@ -398,11 +398,8 @@ _pll_m_c_x_done:
ldr r4, [r5, #0x1C] @ restore SCLK_BURST
str r4, [r0, #CLK_RESET_SCLK_BURST]
- cmp r10, #TEGRA30
- movweq r4, #:lower16:((1 << 28) | (0x8)) @ burst policy is PLLX
- movteq r4, #:upper16:((1 << 28) | (0x8))
- movwne r4, #:lower16:((1 << 28) | (0xe))
- movtne r4, #:upper16:((1 << 28) | (0xe))
+ movw r4, #:lower16:((1 << 28) | (0x4)) @ burst policy is PLLP
+ movt r4, #:upper16:((1 << 28) | (0x4))
str r4, [r0, #CLK_RESET_CCLK_BURST]
/* Restore pad power state to normal */