From f56d9df656c41b141399c1edbcc9b0ed048120c2 Mon Sep 17 00:00:00 2001 From: Jordan Crouse Date: Tue, 21 Nov 2017 12:40:56 -0700 Subject: [PATCH] drm/msm/adreno: Read the speed bins for a5xx targets Some 5xx based chipsets have different bins for GPU clock speeds. Read the fuses (if applicable) and set the appropriate OPP table. This will only work with OPP v2 tables - the bin will be ignored for legacy pwrlevel tables. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c index a1f4eeeb73e2..fdbe9e9bb2b1 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c @@ -17,6 +17,8 @@ #include #include #include +#include +#include #include "msm_gem.h" #include "msm_mmu.h" #include "a5xx_gpu.h" @@ -1184,6 +1186,25 @@ static const struct adreno_gpu_funcs funcs = { .get_timestamp = a5xx_get_timestamp, }; +static void check_speed_bin(struct device *dev) +{ + struct nvmem_cell *cell; + u32 bin, val; + + cell = nvmem_cell_get(dev, "speed_bin"); + + /* If a nvmem cell isn't defined, nothing to do */ + if (IS_ERR(cell)) + return; + + bin = *((u32 *) nvmem_cell_read(cell, NULL)); + nvmem_cell_put(cell); + + val = (1 << bin); + + dev_pm_opp_set_supported_hw(dev, &val, 1); +} + struct msm_gpu *a5xx_gpu_init(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; @@ -1210,6 +1231,8 @@ struct msm_gpu *a5xx_gpu_init(struct drm_device *dev) a5xx_gpu->lm_leakage = 0x4E001A; + check_speed_bin(&pdev->dev); + ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 4); if (ret) { a5xx_destroy(&(a5xx_gpu->base.base)); -- 2.45.2