phy: uniphier-usb3hs: Change Rx sync mode to avoid communication failure

In case of using default parameters, communication failure might occur
in rare cases. This sets Rx sync mode parameter to avoid the issue.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

diff --git a/drivers/phy/socionext/phy-uniphier-usb3hs.c b/drivers/phy/socionext/phy-uniphier-usb3hs.c
index bdf696e5bd22143ab8d7a9a03e69e604a7b93a8a..a9bc74121f38a4daf0635d23d8279066d0ec2c14 100644 (file)
--- a/drivers/phy/socionext/phy-uniphier-usb3hs.c
+++ b/drivers/phy/socionext/phy-uniphier-usb3hs.c
@@ -41,10 +41,12 @@
 
 #define PHY_F(regno, msb, lsb) { (regno), (msb), (lsb) }
 
+#define RX_CHK_SYNC    PHY_F(0, 5, 5)  /* RX sync mode */
+#define RX_SYNC_SEL    PHY_F(1, 1, 0)  /* RX sync length */
 #define LS_SLEW                PHY_F(10, 6, 6) /* LS mode slew rate */
 #define FS_LS_DRV      PHY_F(10, 5, 5) /* FS/LS slew rate */
 
-#define MAX_PHY_PARAMS 2
+#define MAX_PHY_PARAMS 4
 
 struct uniphier_u3hsphy_param {
        struct {
@@ -395,13 +397,19 @@ static const struct uniphier_u3hsphy_soc_data uniphier_pro5_data = {
 
 static const struct uniphier_u3hsphy_soc_data uniphier_pxs2_data = {
        .is_legacy = false,
-       .nparams = 0,
+       .nparams = 2,
+       .param = {
+               { RX_CHK_SYNC, 1 },
+               { RX_SYNC_SEL, 1 },
+       },
 };
 
 static const struct uniphier_u3hsphy_soc_data uniphier_ld20_data = {
        .is_legacy = false,
-       .nparams = 2,
+       .nparams = 4,
        .param = {
+               { RX_CHK_SYNC, 1 },
+               { RX_SYNC_SEL, 1 },
                { LS_SLEW, 1 },
                { FS_LS_DRV, 1 },
        },
@@ -412,7 +420,11 @@ static const struct uniphier_u3hsphy_soc_data uniphier_ld20_data = {
 
 static const struct uniphier_u3hsphy_soc_data uniphier_pxs3_data = {
        .is_legacy = false,
-       .nparams = 0,
+       .nparams = 2,
+       .param = {
+               { RX_CHK_SYNC, 1 },
+               { RX_SYNC_SEL, 1 },
+       },
        .trim_func = uniphier_u3hsphy_trim_ld20,
        .config0 = 0x92316680,
        .config1 = 0x00000106,