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authorKunihiko Hayashi <hayashi.kunihiko@socionext.com>2020-01-30 09:52:43 +0300
committerKishon Vijay Abraham I <kishon@ti.com>2020-03-20 17:04:29 +0300
commit25858c5213d2d69b568bf28b960a3b999ebc3ea9 (patch)
treea4be50d79b376016353df302fb3c0234e1d4d37d /drivers/phy/socionext
parente68c2a8a2f45cbe4a237b874f87ec14ae2dfa84c (diff)
downloadlinux-25858c5213d2d69b568bf28b960a3b999ebc3ea9.tar.xz
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>
Diffstat (limited to 'drivers/phy/socionext')
-rw-r--r--drivers/phy/socionext/phy-uniphier-usb3hs.c20
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/phy/socionext/phy-uniphier-usb3hs.c b/drivers/phy/socionext/phy-uniphier-usb3hs.c
index bdf696e5bd22..a9bc74121f38 100644
--- 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,