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-rw-r--r--drivers/devfreq/event/rockchip-dfi.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c
index 12f909687923..571d72d1abd1 100644
--- a/drivers/devfreq/event/rockchip-dfi.c
+++ b/drivers/devfreq/event/rockchip-dfi.c
@@ -23,6 +23,7 @@
#include <soc/rockchip/rockchip_grf.h>
#include <soc/rockchip/rk3399_grf.h>
+#include <soc/rockchip/rk3568_grf.h>
#define DMC_MAX_CHANNELS 2
@@ -211,10 +212,36 @@ static int rk3399_dfi_init(struct rockchip_dfi *dfi)
return 0;
};
+static int rk3568_dfi_init(struct rockchip_dfi *dfi)
+{
+ struct regmap *regmap_pmu = dfi->regmap_pmu;
+ u32 reg2, reg3;
+
+ regmap_read(regmap_pmu, RK3568_PMUGRF_OS_REG2, &reg2);
+ regmap_read(regmap_pmu, RK3568_PMUGRF_OS_REG3, &reg3);
+
+ /* lower 3 bits of the DDR type */
+ dfi->ddr_type = FIELD_GET(RK3568_PMUGRF_OS_REG2_DRAMTYPE_INFO, reg2);
+
+ /*
+ * For version three and higher the upper two bits of the DDR type are
+ * in RK3568_PMUGRF_OS_REG3
+ */
+ if (FIELD_GET(RK3568_PMUGRF_OS_REG3_SYSREG_VERSION, reg3) >= 0x3)
+ dfi->ddr_type |= FIELD_GET(RK3568_PMUGRF_OS_REG3_DRAMTYPE_INFO_V3, reg3) << 3;
+
+ dfi->channel_mask = BIT(0);
+ dfi->max_channels = 1;
+
+ return 0;
+};
+
static const struct of_device_id rockchip_dfi_id_match[] = {
{ .compatible = "rockchip,rk3399-dfi", .data = rk3399_dfi_init },
+ { .compatible = "rockchip,rk3568-dfi", .data = rk3568_dfi_init },
{ },
};
+
MODULE_DEVICE_TABLE(of, rockchip_dfi_id_match);
static int rockchip_dfi_probe(struct platform_device *pdev)