mmc: am654_sdhci: Add support for writing to clkbuf_sel
Add support for writing new clock buffer select property for both
the am654x and j721e 4 bit IPs
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
diff --git a/drivers/mmc/am654_sdhci.c b/drivers/mmc/am654_sdhci.c
index b825582..e86ef1a 100644
--- a/drivers/mmc/am654_sdhci.c
+++ b/drivers/mmc/am654_sdhci.c
@@ -48,6 +48,8 @@
#define SEL100_MASK BIT(SEL100_SHIFT)
#define FREQSEL_SHIFT 8
#define FREQSEL_MASK GENMASK(10, 8)
+#define CLKBUFSEL_SHIFT 0
+#define CLKBUFSEL_MASK GENMASK(2, 0)
#define DLL_TRIM_ICP_SHIFT 4
#define DLL_TRIM_ICP_MASK GENMASK(7, 4)
#define DR_TY_SHIFT 20
@@ -92,6 +94,7 @@
u32 trm_icp;
u32 drv_strength;
u32 strb_sel;
+ u32 clkbuf_sel;
u32 flags;
#define DLL_PRESENT BIT(0)
#define IOMUX_PRESENT BIT(1)
@@ -295,6 +298,9 @@
am654_sdhci_setup_delay_chain(plat, mode);
}
+ regmap_update_bits(plat->base, PHY_CTRL5, CLKBUFSEL_MASK,
+ plat->clkbuf_sel);
+
return 0;
}
@@ -395,6 +401,9 @@
val = (1 << OTAPDLYENA_SHIFT) | (otap_del_sel << OTAPDLYSEL_SHIFT);
regmap_update_bits(plat->base, PHY_CTRL4, mask, val);
+ regmap_update_bits(plat->base, PHY_CTRL5, CLKBUFSEL_MASK,
+ plat->clkbuf_sel);
+
return 0;
}
@@ -548,6 +557,8 @@
}
}
+ dev_read_u32(dev, "ti,clkbuf-sel", &plat->clkbuf_sel);
+
ret = mmc_of_parse(dev, cfg);
if (ret)
return ret;