From: Evan Quan Date: Thu, 15 Jun 2023 02:56:55 +0000 (+0800) Subject: drm/amd/pm: revise the ASPM settings for thunderbolt attached scenario X-Git-Tag: v6.6.17~4420^2~2^2~63 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fd21987274463a439c074b8f3c93d3b132e4c031;p=platform%2Fkernel%2Flinux-rpi.git drm/amd/pm: revise the ASPM settings for thunderbolt attached scenario Also, correct the comment for NAVI10_PCIE__LC_L1_INACTIVITY_TBT_DEFAULT as 0x0000000E stands for 400ms instead of 4ms. Signed-off-by: Evan Quan Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c index aa761ff..7ba47fc 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c @@ -346,7 +346,7 @@ static void nbio_v2_3_init_registers(struct amdgpu_device *adev) #define NAVI10_PCIE__LC_L0S_INACTIVITY_DEFAULT 0x00000000 // off by default, no gains over L1 #define NAVI10_PCIE__LC_L1_INACTIVITY_DEFAULT 0x00000009 // 1=1us, 9=1ms -#define NAVI10_PCIE__LC_L1_INACTIVITY_TBT_DEFAULT 0x0000000E // 4ms +#define NAVI10_PCIE__LC_L1_INACTIVITY_TBT_DEFAULT 0x0000000E // 400ms static void nbio_v2_3_enable_aspm(struct amdgpu_device *adev, bool enable) @@ -479,9 +479,12 @@ static void nbio_v2_3_program_aspm(struct amdgpu_device *adev) WREG32_SOC15(NBIO, 0, mmRCC_BIF_STRAP5, data); def = data = RREG32_PCIE(smnPCIE_LC_CNTL); - data &= ~PCIE_LC_CNTL__LC_L0S_INACTIVITY_MASK; - data |= 0x9 << PCIE_LC_CNTL__LC_L1_INACTIVITY__SHIFT; - data |= 0x1 << PCIE_LC_CNTL__LC_PMI_TO_L1_DIS__SHIFT; + data |= NAVI10_PCIE__LC_L0S_INACTIVITY_DEFAULT << PCIE_LC_CNTL__LC_L0S_INACTIVITY__SHIFT; + if (pci_is_thunderbolt_attached(adev->pdev)) + data |= NAVI10_PCIE__LC_L1_INACTIVITY_TBT_DEFAULT << PCIE_LC_CNTL__LC_L1_INACTIVITY__SHIFT; + else + data |= NAVI10_PCIE__LC_L1_INACTIVITY_DEFAULT << PCIE_LC_CNTL__LC_L1_INACTIVITY__SHIFT; + data &= ~PCIE_LC_CNTL__LC_PMI_TO_L1_DIS_MASK; if (def != data) WREG32_PCIE(smnPCIE_LC_CNTL, data);