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| author | Kunihiko Hayashi <hayashi.kunihiko@socionext.com> | 2020-01-30 09:52:43 +0300 |
|---|---|---|
| committer | Kishon Vijay Abraham I <kishon@ti.com> | 2020-03-20 17:04:29 +0300 |
| commit | 25858c5213d2d69b568bf28b960a3b999ebc3ea9 (patch) | |
| tree | a4be50d79b376016353df302fb3c0234e1d4d37d | |
| parent | e68c2a8a2f45cbe4a237b874f87ec14ae2dfa84c (diff) | |
| download | linux-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>
| -rw-r--r-- | drivers/phy/socionext/phy-uniphier-usb3hs.c | 20 |
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, |