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-rw-r--r--src/soc/rockchip/rk3399/sdram.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/soc/rockchip/rk3399/sdram.c b/src/soc/rockchip/rk3399/sdram.c
index 89463aa174..9490c0c2e4 100644
--- a/src/soc/rockchip/rk3399/sdram.c
+++ b/src/soc/rockchip/rk3399/sdram.c
@@ -100,6 +100,18 @@ static void copy_to_reg(u32 *dest, const u32 *src, u32 n)
}
}
+static void phy_pctrl_reset(u32 channel)
+{
+ rkclk_ddr_reset(channel, 1, 1);
+ udelay(10);
+
+ rkclk_ddr_reset(channel, 1, 0);
+ udelay(10);
+
+ rkclk_ddr_reset(channel, 0, 0);
+ udelay(10);
+}
+
static void phy_dll_bypass_set(u32 channel,
struct rk3399_ddr_publ_regs *ddr_publ_regs, u32 freq)
{
@@ -1083,6 +1095,7 @@ void sdram_init(const struct rk3399_sdram_params *params)
rkclk_configure_ddr(ddr_freq);
for (channel = 0; channel < 2; channel++) {
+ phy_pctrl_reset(channel);
phy_dll_bypass_set(channel, rk3399_ddr_publ[channel], ddr_freq);
if (channel >= params->num_channels)