diff options
| -rw-r--r-- | drivers/soc/mediatek/mtk-infracfg.c | 19 | ||||
| -rw-r--r-- | include/linux/soc/mediatek/infracfg.h | 3 |
2 files changed, 22 insertions, 0 deletions
diff --git a/drivers/soc/mediatek/mtk-infracfg.c b/drivers/soc/mediatek/mtk-infracfg.c index 0590b68e0d78..2acf19676af2 100644 --- a/drivers/soc/mediatek/mtk-infracfg.c +++ b/drivers/soc/mediatek/mtk-infracfg.c @@ -6,6 +6,7 @@ #include <linux/export.h> #include <linux/jiffies.h> #include <linux/regmap.h> +#include <linux/mfd/syscon.h> #include <linux/soc/mediatek/infracfg.h> #include <asm/processor.h> @@ -72,3 +73,21 @@ int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask, return ret; } + +static int __init mtk_infracfg_init(void) +{ + struct regmap *infracfg; + + /* + * MT8192 has an experimental path to route GPU traffic to the DSU's + * Accelerator Coherency Port, which is inadvertently enabled by + * default. It turns out not to work, so disable it to prevent spurious + * GPU faults. + */ + infracfg = syscon_regmap_lookup_by_compatible("mediatek,mt8192-infracfg"); + if (!IS_ERR(infracfg)) + regmap_set_bits(infracfg, MT8192_INFRA_CTRL, + MT8192_INFRA_CTRL_DISABLE_MFG2ACP); + return 0; +} +postcore_initcall(mtk_infracfg_init); diff --git a/include/linux/soc/mediatek/infracfg.h b/include/linux/soc/mediatek/infracfg.h index 8a1c2040a28e..50804ac748bd 100644 --- a/include/linux/soc/mediatek/infracfg.h +++ b/include/linux/soc/mediatek/infracfg.h @@ -277,6 +277,9 @@ #define INFRA_TOPAXI_PROTECTEN_SET 0x0260 #define INFRA_TOPAXI_PROTECTEN_CLR 0x0264 +#define MT8192_INFRA_CTRL 0x290 +#define MT8192_INFRA_CTRL_DISABLE_MFG2ACP BIT(9) + #define REG_INFRA_MISC 0xf00 #define F_DDR_4GB_SUPPORT_EN BIT(13) |