From: Niklas Söderlund Date: Fri, 30 Aug 2024 20:31:03 +0000 (+0200) Subject: media: rcar-csi2: Add documentation for PHY_EN and PHY_MODE registers X-Git-Tag: v6.13-rc1~149^2~145 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=a59f7ffdf4351fa98bc0ffea17faebdbf89d044c;p=linux-block.git media: rcar-csi2: Add documentation for PHY_EN and PHY_MODE registers Later datasheets add documentation for two magic value used for V4H support. The same registers will also be used for V4M support, document them. Signed-off-by: Niklas Söderlund Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c index 0676790af472..39f349da5b33 100644 --- a/drivers/media/platform/renesas/rcar-csi2.c +++ b/drivers/media/platform/renesas/rcar-csi2.c @@ -135,13 +135,23 @@ struct rcar_csi2; /* V4H BASE registers */ #define V4H_N_LANES_REG 0x0004 #define V4H_CSI2_RESETN_REG 0x0008 + #define V4H_PHY_MODE_REG 0x001c +#define V4H_PHY_MODE_DPHY 0 +#define V4H_PHY_MODE_CPHY 1 + #define V4H_PHY_SHUTDOWNZ_REG 0x0040 #define V4H_DPHY_RSTZ_REG 0x0044 #define V4H_FLDC_REG 0x0804 #define V4H_FLDD_REG 0x0808 #define V4H_IDIC_REG 0x0810 + #define V4H_PHY_EN_REG 0x2000 +#define V4H_PHY_EN_ENABLE_3 BIT(7) +#define V4H_PHY_EN_ENABLE_2 BIT(6) +#define V4H_PHY_EN_ENABLE_1 BIT(5) +#define V4H_PHY_EN_ENABLE_0 BIT(4) +#define V4H_PHY_EN_ENABLE_CLK BIT(0) #define V4H_ST_PHYST_REG 0x2814 #define V4H_ST_PHYST_ST_PHY_READY BIT(31) @@ -1146,11 +1156,11 @@ static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv, rcsi2_write(priv, V4H_PHY_SHUTDOWNZ_REG, 0); /* PHY static setting */ - rcsi2_write(priv, V4H_PHY_EN_REG, BIT(0)); + rcsi2_write(priv, V4H_PHY_EN_REG, V4H_PHY_EN_ENABLE_CLK); rcsi2_write(priv, V4H_FLDC_REG, 0); rcsi2_write(priv, V4H_FLDD_REG, 0); rcsi2_write(priv, V4H_IDIC_REG, 0); - rcsi2_write(priv, V4H_PHY_MODE_REG, BIT(0)); + rcsi2_write(priv, V4H_PHY_MODE_REG, V4H_PHY_MODE_CPHY); rcsi2_write(priv, V4H_N_LANES_REG, lanes - 1); /* Reset CSI2 */