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ARM: tegra: Restore memory arbitration on resume from LP1 on Tegra30+ 

The external memory arbitration configuration is getting reset after
memory entering into self-refresh mode, it shall be restored on the
exit. Note that MC_EMEM_ARB_CFG register is shadowed and latching
happens on the EMC timing update. This fixes 2x GPU performance
degradation after resuming from LP1 on Tegra30.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Dmitry Osipenko 2018-11-25 00:13:48 +03:00 committed by Thierry Reding
parent d8f5840992
commit 1c6279b49d
2 changed files with 30 additions and 0 deletions
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9
arch/arm/mach-tegra/iomap.h
View File

@ -79,15 +79,24 @@
#define TEGRA_PMC_BASE 0x7000E400
#define TEGRA_PMC_SIZE SZ_256
#define TEGRA_MC_BASE 0x7000F000
#define TEGRA_MC_SIZE SZ_1K
#define TEGRA_EMC_BASE 0x7000F400
#define TEGRA_EMC_SIZE SZ_1K
#define TEGRA114_MC_BASE 0x70019000
#define TEGRA114_MC_SIZE SZ_4K
#define TEGRA_EMC0_BASE 0x7001A000
#define TEGRA_EMC0_SIZE SZ_2K
#define TEGRA_EMC1_BASE 0x7001A800
#define TEGRA_EMC1_SIZE SZ_2K
#define TEGRA124_MC_BASE 0x70019000
#define TEGRA124_MC_SIZE SZ_4K
#define TEGRA124_EMC_BASE 0x7001B000
#define TEGRA124_EMC_SIZE SZ_2K

21
arch/arm/mach-tegra/sleep-tegra30.S
View File

@ -44,6 +44,8 @@
#define EMC_XM2VTTGENPADCTRL 0x310
#define EMC_XM2VTTGENPADCTRL2 0x314
#define MC_EMEM_ARB_CFG 0x90
#define PMC_CTRL 0x0
#define PMC_CTRL_SIDE_EFFECT_LP0 (1 << 14) /* enter LP0 when CPU pwr gated */
@ -418,6 +420,22 @@ _pll_m_c_x_done:
movweq r0, #:lower16:TEGRA124_EMC_BASE
movteq r0, #:upper16:TEGRA124_EMC_BASE
cmp r10, #TEGRA30
moveq r2, #0x20
movweq r4, #:lower16:TEGRA_MC_BASE
movteq r4, #:upper16:TEGRA_MC_BASE
cmp r10, #TEGRA114
moveq r2, #0x34
movweq r4, #:lower16:TEGRA114_MC_BASE
movteq r4, #:upper16:TEGRA114_MC_BASE
cmp r10, #TEGRA124
moveq r2, #0x20
movweq r4, #:lower16:TEGRA124_MC_BASE
movteq r4, #:upper16:TEGRA124_MC_BASE
ldr r1, [r5, r2] @ restore MC_EMEM_ARB_CFG
str r1, [r4, #MC_EMEM_ARB_CFG]
exit_self_refresh:
ldr r1, [r5, #0xC] @ restore EMC_XM2VTTGENPADCTRL
str r1, [r0, #EMC_XM2VTTGENPADCTRL]
@ -546,6 +564,7 @@ tegra30_sdram_pad_address:
.word TEGRA_PMC_BASE + PMC_IO_DPD_STATUS @0x14
.word TEGRA_CLK_RESET_BASE + CLK_RESET_CLK_SOURCE_MSELECT @0x18
.word TEGRA_CLK_RESET_BASE + CLK_RESET_SCLK_BURST @0x1c
.word TEGRA_MC_BASE + MC_EMEM_ARB_CFG @0x20
tegra30_sdram_pad_address_end:
tegra114_sdram_pad_address:
@ -562,6 +581,7 @@ tegra114_sdram_pad_address:
.word TEGRA_EMC1_BASE + EMC_AUTO_CAL_INTERVAL @0x28
.word TEGRA_EMC1_BASE + EMC_XM2VTTGENPADCTRL @0x2c
.word TEGRA_EMC1_BASE + EMC_XM2VTTGENPADCTRL2 @0x30
.word TEGRA114_MC_BASE + MC_EMEM_ARB_CFG @0x34
tegra114_sdram_pad_adress_end:
tegra124_sdram_pad_address:
@ -573,6 +593,7 @@ tegra124_sdram_pad_address:
.word TEGRA_PMC_BASE + PMC_IO_DPD_STATUS @0x14
.word TEGRA_CLK_RESET_BASE + CLK_RESET_CLK_SOURCE_MSELECT @0x18
.word TEGRA_CLK_RESET_BASE + CLK_RESET_SCLK_BURST @0x1c
.word TEGRA124_MC_BASE + MC_EMEM_ARB_CFG @0x20
tegra124_sdram_pad_address_end:
tegra30_sdram_pad_size: