After the commit 45a2974157d2 ("drm/msm: Use the central UBWC config database") the MDSS driver errors out if UBWC database didn't provide it with the UBWC configuration. Make UBWC database return zero data for MSM8916 / APQ8016, MSM8974 / APQ8074, MSM8226 and MSM8939.
Fixes: 1924272b9ce1 ("soc: qcom: Add UBWC config provider") Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@oss.qualcomm.com> --- Note: the driver is a part of drivers/soc, but as it got merged through drm/msm tree, this fix should also go through the drm/msm tree. --- drivers/soc/qcom/ubwc_config.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/soc/qcom/ubwc_config.c b/drivers/soc/qcom/ubwc_config.c index bd0a98aad9f3b222abcf0a7af85a318caffa9841..df074520a8cae1a202a14ca094903bb1e7389066 100644 --- a/drivers/soc/qcom/ubwc_config.c +++ b/drivers/soc/qcom/ubwc_config.c @@ -12,6 +12,10 @@ #include <linux/soc/qcom/ubwc.h> +static const struct qcom_ubwc_cfg_data no_ubwc_data = { + /* no UBWC, no HBB */ +}; + static const struct qcom_ubwc_cfg_data msm8937_data = { .ubwc_enc_version = UBWC_1_0, .ubwc_dec_version = UBWC_1_0, @@ -215,11 +219,17 @@ static const struct qcom_ubwc_cfg_data x1e80100_data = { }; static const struct of_device_id qcom_ubwc_configs[] __maybe_unused = { + { .compatible = "qcom,apq8016", .data = &no_ubwc_data }, + { .compatible = "qcom,apq8074", .data = &no_ubwc_data }, { .compatible = "qcom,apq8096", .data = &msm8998_data }, + { .compatible = "qcom,msm8226", .data = &no_ubwc_data }, + { .compatible = "qcom,msm8916", .data = &no_ubwc_data }, { .compatible = "qcom,msm8917", .data = &msm8937_data }, { .compatible = "qcom,msm8937", .data = &msm8937_data }, + { .compatible = "qcom,msm8939", .data = &no_ubwc_data }, { .compatible = "qcom,msm8953", .data = &msm8937_data }, { .compatible = "qcom,msm8956", .data = &msm8937_data }, + { .compatible = "qcom,msm8974", .data = &no_ubwc_data }, { .compatible = "qcom,msm8976", .data = &msm8937_data }, { .compatible = "qcom,msm8996", .data = &msm8998_data }, { .compatible = "qcom,msm8998", .data = &msm8998_data }, --- base-commit: 8290d37ad2b087bbcfe65fa5bcaf260e184b250a change-id: 20250706-ubwc-no-ubwc-3c5919273e03 Best regards, -- With best wishes Dmitry