Re: [PATCH v6 5/8] media: qcom: camss: csiphy-3ph: Add Gen2 v1.1 MIPI CSI-2 C-PHY init

[Frank Li]

On Wed, Jun 03, 2026 at 01:30:43AM +0200, David Heidelberg wrote:
> Add a PHY configuration sequence for the sdm845 which uses a Qualcomm
> Gen 2 version 1.1 CSI-2 PHY.
>
> The PHY can be configured as two phase or three phase in C-PHY or D-PHY
> mode. This configuration supports three-phase C-PHY mode.
>
> Signed-off-by: David Heidelberg <david@xxxxxxx>
> ---
>  .../platform/qcom/camss/camss-csiphy-3ph-1-0.c     | 78 +++++++++++++++++++++-
>  1 file changed, 76 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c b/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
> index 938c365eb352f..13d7372bd225d 100644
> --- a/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
> +++ b/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
> @@ -45,16 +45,23 @@
>
>  #define CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(offset, n)	((offset) + 0x4 * (n))
>  #define CSIPHY_3PH_CMN_CSI_COMMON_CTRL5_CLK_ENABLE	BIT(7)
>  #define CSIPHY_3PH_CMN_CSI_COMMON_CTRL6_COMMON_PWRDN_B	BIT(0)
>  #define CSIPHY_3PH_CMN_CSI_COMMON_CTRL6_SHOW_REV_ID	BIT(1)
>  #define CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(offset, common_status_offset, n) \
>  	((offset) + (common_status_offset) + 0x4 * (n))
...
> +csiphy_lane_regs lane_regs_sdm845_3ph[] = {
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(23), 0x43, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(26), 0xa0, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(27), 0x25, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(1),  0x06, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(3),  0x12, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(2),  0x00, 0x00, CSIPHY_SETTLE_CNT_HIGHER_BYTE},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(5),  0x20, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(20), 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(6),  0x3e, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(7),  0x41, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(8),  0x41, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(9),  0x7f, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(10), 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(11), 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(17), 0x12, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(24), 0x02, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(51), 0x41, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(25), 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
> +	{CSIPHY_LN1_CSI_3PH_CTRLn_ADDR(55), 0x51, 0x00, CSIPHY_DEFAULT_PARAMS},

what's these magic number in ADDR(x), if it is register, it'd better to use
macro.

Frank
...
> 2.53.0
>