drm/panfrost: Add support for Mali on the MT8370 SoC

Add a compatible for the MediaTek MT8370 SoC, with an integrated ARM
Mali G57 MC2 GPU (Valhall-JM, dual core), with new platform data for
its support in the panfrost driver.
It uses the same data as MT8186 for the power management features to
describe power supplies, pm_domains and enablement (one regulator, two
power domains) but also sets the FORCE_AARCH64_PGTABLE flag in the GPU
configuration quirks bitfield to enable AARCH64 4K page table format
mode.
As MT8186 and MT8370 SoC have different GPU architecture (Mali G52 2EE
MC2 for MT8186), making them not compatible, and this mode is only
enabled for Mediatek SoC that are Mali G57 based (compatible with
mediatek,mali-mt8188 or mediatek,mali-8192), having specific platform
data allows to set this flag for MT8370 without modifying MT8186
configuration and behaviour.

Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://lore.kernel.org/r/20250509-mt8370-enable-gpu-v6-4-2833888cb1d3@collabora.com

diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c
index 642c2a8a75ec7d4f26f77d5893af1df2a21c7346..1ea6c509a5d599e296fbba3cd16f7be3b9769665 100644 (file)
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@@ -918,6 +918,15 @@ static const struct panfrost_compatible mediatek_mt8192_data = {
        .gpu_quirks = BIT(GPU_QUIRK_FORCE_AARCH64_PGTABLE),
 };
 
+static const struct panfrost_compatible mediatek_mt8370_data = {
+       .num_supplies = ARRAY_SIZE(default_supplies) - 1,
+       .supply_names = default_supplies,
+       .num_pm_domains = 2,
+       .pm_domain_names = mediatek_pm_domains,
+       .pm_features = BIT(GPU_PM_CLK_DIS) | BIT(GPU_PM_VREG_OFF),
+       .gpu_quirks = BIT(GPU_QUIRK_FORCE_AARCH64_PGTABLE),
+};
+
 static const struct of_device_id dt_match[] = {
        /* Set first to probe before the generic compatibles */
        { .compatible = "amlogic,meson-gxm-mali",
@@ -940,6 +949,7 @@ static const struct of_device_id dt_match[] = {
        { .compatible = "mediatek,mt8186-mali", .data = &mediatek_mt8186_data },
        { .compatible = "mediatek,mt8188-mali", .data = &mediatek_mt8188_data },
        { .compatible = "mediatek,mt8192-mali", .data = &mediatek_mt8192_data },
+       { .compatible = "mediatek,mt8370-mali", .data = &mediatek_mt8370_data },
        { .compatible = "allwinner,sun50i-h616-mali", .data = &allwinner_h616_data },
        {}
 };