On 30/04/2025 14:35, Konrad Dybcio wrote:
On 4/30/25 2:26 PM, neil.armstr...@linaro.org wrote:
Hi,

On 30/04/2025 13:34, Konrad Dybcio wrote:
From: Konrad Dybcio <konrad.dyb...@linaro.org>

Add speebin data for A740, as found on SM8550 and derivative SoCs.

For non-development SoCs it seems that "everything except FC_AC, FC_AF
should be speedbin 1", but what the values are for said "everything" are
not known, so that's an exercise left to the user..

Reviewed-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dyb...@linaro.org>
---
   drivers/gpu/drm/msm/adreno/a6xx_catalog.c | 8 ++++++++
   1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_catalog.c 
b/drivers/gpu/drm/msm/adreno/a6xx_catalog.c
index 
53e2ff4406d8f0afe474aaafbf0e459ef8f4577d..61daa331567925e529deae5e25d6fb63a8ba8375
 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_catalog.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_catalog.c
@@ -11,6 +11,9 @@
   #include "a6xx.xml.h"
   #include "a6xx_gmu.xml.h"
   +#include <linux/soc/qcom/smem.h>
+#include <linux/soc/qcom/socinfo.h>
+
   static const struct adreno_reglist a612_hwcg[] = {
       {REG_A6XX_RBBM_CLOCK_CNTL_SP0, 0x22222222},
       {REG_A6XX_RBBM_CLOCK_CNTL2_SP0, 0x02222220},
@@ -1431,6 +1434,11 @@ static const struct adreno_info a7xx_gpus[] = {
           },
           .address_space_size = SZ_16G,
           .preempt_record_size = 4192 * SZ_1K,
+        .speedbins = ADRENO_SPEEDBINS(
+            { ADRENO_SKU_ID(SOCINFO_FC_AC), 0 },
+            { ADRENO_SKU_ID(SOCINFO_FC_AF), 0 },
+            /* Other feature codes (on prod SoCs) should match to speedbin 1 */

I'm trying to understand this sentence. because reading patch 4, when there's 
no match
devm_pm_opp_set_supported_hw() is simply never called so how can it match 
speedbin 1 ?

What I'm saying is that all other entries that happen to be possibly
added down the line are expected to be speedbin 1 (i.e. BIT(1))

Before this change the fallback was speedbin = BIT(0), but this disappeared.

No, the default was to allow speedbin mask ~(0U)

Hmm no:

        supp_hw = fuse_to_supp_hw(info, speedbin);

        if (supp_hw == UINT_MAX) {
                DRM_DEV_ERROR(dev,
                        "missing support for speed-bin: %u. Some OPPs may not be 
supported by hardware\n",
                        speedbin);
                supp_hw = BIT(0); /* Default */
        }

        ret = devm_pm_opp_set_supported_hw(dev, &supp_hw, 1);
        if (ret)
                return ret;


Konrad

Reply via email to