#define PHYCTRL_OTAPDLYENA 0x1
#define PHYCTRL_OTAPDLYENA_MASK 0x1
#define PHYCTRL_OTAPDLYENA_SHIFT 0xb
+#define PHYCTRL_OTAPDLYSEL_DEFAULT 0x4
+#define PHYCTRL_OTAPDLYSEL_MAXVALUE 0xf
#define PHYCTRL_OTAPDLYSEL_MASK 0xf
#define PHYCTRL_OTAPDLYSEL_SHIFT 0x7
#define PHYCTRL_REN_STRB_DISABLE 0x0
struct clk *emmcclk;
unsigned int drive_impedance;
unsigned int enable_strobe_pulldown;
+ unsigned int output_tapdelay_select;
};
static int rockchip_emmc_phy_power(struct phy *phy, bool on_off)
/* Output tap delay */
regmap_write(rk_phy->reg_base,
rk_phy->reg_offset + GRF_EMMCPHY_CON0,
- HIWORD_UPDATE(4,
+ HIWORD_UPDATE(rk_phy->output_tapdelay_select,
PHYCTRL_OTAPDLYSEL_MASK,
PHYCTRL_OTAPDLYSEL_SHIFT));
rk_phy->reg_base = grf;
rk_phy->drive_impedance = PHYCTRL_DR_50OHM;
rk_phy->enable_strobe_pulldown = PHYCTRL_REN_STRB_DISABLE;
+ rk_phy->output_tapdelay_select = PHYCTRL_OTAPDLYSEL_DEFAULT;
if (!of_property_read_u32(dev->of_node, "drive-impedance-ohm", &val))
rk_phy->drive_impedance = convert_drive_impedance_ohm(pdev, val);
if (of_property_read_bool(dev->of_node, "enable-strobe-pulldown"))
rk_phy->enable_strobe_pulldown = PHYCTRL_REN_STRB_ENABLE;
+ if (!of_property_read_u32(dev->of_node, "output-tapdelay-select", &val)) {
+ if (val <= PHYCTRL_OTAPDLYSEL_MAXVALUE)
+ rk_phy->output_tapdelay_select = val;
+ else
+ dev_err(dev, "output-tapdelay-select exceeds limit, apply default\n");
+ }
+
generic_phy = devm_phy_create(dev, dev->of_node, &ops);
if (IS_ERR(generic_phy)) {
dev_err(dev, "failed to create PHY\n");