On 1/24/2020 11:56 PM, Jordan Crouse wrote:
On Fri, Jan 24, 2020 at 05:50:11PM +0530, Akhil P Oommen wrote:
Highest bank bit configuration is different for a618 gpu. Update
it with the correct configuration which is the reset value incidentally.
Signed-off-by: Akhil P Oommen <akhilpo@xxxxxxxxxxxxxx>
Signed-off-by: Sharat Masetty <smasetty@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index daf0780..536d196 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -470,10 +470,12 @@ static int a6xx_hw_init(struct msm_gpu *gpu)
/* Select CP0 to always count cycles */
gpu_write(gpu, REG_A6XX_CP_PERFCTR_CP_SEL_0, PERF_CP_ALWAYS_COUNT);
- gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL, 2 << 1);
- gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, 2 << 1);
- gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL, 2 << 1);
- gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, 2 << 21);
+ if (adreno_is_a630(adreno_gpu)) {
+ gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL, 2 << 1);
+ gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, 2 << 1);
+ gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL, 2 << 1);
+ gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, 2 << 21);
+ }
it shouldn't come as a surprise that everything in the a6xx family is going to
have a highest bank bit setting. Even though the a618 uses the reset value, I
think it would be less confusing to future folks if we explicitly program it:
if (adreno_is_a630(adreno_dev))
hbb = 2;
else
hbb = 0;
I think it would be better if we keep this in the adreno_info. Yes, this
would waste a tiny bit of space for other gpu
entries in the gpulist. It is also possible to move this to a separate
struct and keep a pointer to it in the adreno_info.
But that is something we should try when there are more a6xx specific
configurations in future.
I have a new patch, but testing it is taking longer that I expected. I
will share it as soon as possible.
....
Jordan
Akhil
--
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