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Message-Id: <20250314-b4-media-comitters-next-25-03-13-x1e80100-camss-driver-v2-6-d163d66fcc0d@linaro.org>
Date: Fri, 14 Mar 2025 23:35:59 +0000
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Robert Foss <rfoss@...nel.org>, Todor Tomov <todor.too@...il.com>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Subject: [PATCH v2 6/7] media: qcom: camss: csiphy-3ph: Add 4nm CSIPHY 2ph
 5Gbps DPHY v2.1.2 init sequence

For various SoC skews at 4nm CSIPHY 2.1.2 is used. Add in the init sequence
with base control reg offset of 0x1000.

This initial version will support X1E80100. Take the silicon verification
PHY init parameters as a first/best guess pass.

SKEW_CAL is included as received from the qcom silicon init sequence.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
---
 .../platform/qcom/camss/camss-csiphy-3ph-1-0.c     | 121 +++++++++++++++++++++
 1 file changed, 121 insertions(+)

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 b44939686e4bbf400f145368d3ba015b56bfb187..d5f717f6215c45908c4fc5a8650d68c00d544db7 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
@@ -55,6 +55,7 @@
 #define CSIPHY_DNP_PARAMS		4
 #define CSIPHY_2PH_REGS			5
 #define CSIPHY_3PH_REGS			6
+#define CSIPHY_SKEW_CAL			7
 
 struct csiphy_lane_regs {
 	s32 reg_addr;
@@ -423,6 +424,123 @@ csiphy_lane_regs lane_regs_sm8550[] = {
 	{0x0C64, 0x7F, 0x00, CSIPHY_DEFAULT_PARAMS},
 };
 
+/* 4nm 2PH v 2.1.2 2p5Gbps 4 lane DPHY mode */
+static const struct
+csiphy_lane_regs lane_regs_x1e80100[] = {
+	/* Power up lanes 2ph mode */
+	{0x1014, 0xD5, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x101C, 0x7A, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x1018, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
+
+	{0x0094, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x00A0, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0090, 0x0f, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0098, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0094, 0x07, 0x01, CSIPHY_DEFAULT_PARAMS},
+	{0x0030, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0000, 0x8E, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0038, 0xFE, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x002C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0034, 0x0F, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x001C, 0x0A, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0014, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x003C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0004, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0020, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0008, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
+	{0x0010, 0x52, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0094, 0xD7, 0x00, CSIPHY_SKEW_CAL},
+	{0x005C, 0x00, 0x00, CSIPHY_SKEW_CAL},
+	{0x0060, 0xBD, 0x00, CSIPHY_SKEW_CAL},
+	{0x0064, 0x7F, 0x00, CSIPHY_SKEW_CAL},
+
+	{0x0E94, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0EA0, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E90, 0x0f, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E98, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E94, 0x07, 0x01, CSIPHY_DEFAULT_PARAMS},
+	{0x0E30, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E28, 0x04, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E00, 0x80, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E0C, 0xFF, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E38, 0x1F, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E2C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E34, 0x0F, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E1C, 0x0A, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E14, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E3C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E04, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E20, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0E08, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
+	{0x0E10, 0x52, 0x00, CSIPHY_DEFAULT_PARAMS},
+
+	{0x0494, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x04A0, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0490, 0x0f, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0498, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0494, 0x07, 0x01, CSIPHY_DEFAULT_PARAMS},
+	{0x0430, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0400, 0x8E, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0438, 0xFE, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x042C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0434, 0x0F, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x041C, 0x0A, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0414, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x043C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0404, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0420, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0408, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
+	{0x0410, 0x52, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0494, 0xD7, 0x00, CSIPHY_SKEW_CAL},
+	{0x045C, 0x00, 0x00, CSIPHY_SKEW_CAL},
+	{0x0460, 0xBD, 0x00, CSIPHY_SKEW_CAL},
+	{0x0464, 0x7F, 0x00, CSIPHY_SKEW_CAL},
+
+	{0x0894, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x08A0, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0890, 0x0f, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0898, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0894, 0x07, 0x01, CSIPHY_DEFAULT_PARAMS},
+	{0x0830, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0800, 0x8E, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0838, 0xFE, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x082C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0834, 0x0F, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x081C, 0x0A, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0814, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x083C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0804, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0820, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0808, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
+	{0x0810, 0x52, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0894, 0xD7, 0x00, CSIPHY_SKEW_CAL},
+	{0x085C, 0x00, 0x00, CSIPHY_SKEW_CAL},
+	{0x0860, 0xBD, 0x00, CSIPHY_SKEW_CAL},
+	{0x0864, 0x7F, 0x00, CSIPHY_SKEW_CAL},
+
+	{0x0C94, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0CA0, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C90, 0x0f, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C98, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C94, 0x07, 0x01, CSIPHY_DEFAULT_PARAMS},
+	{0x0C30, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C00, 0x8E, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C38, 0xFE, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C2C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C34, 0x0F, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C1C, 0x0A, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C14, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C3C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C04, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C20, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C08, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
+	{0x0C10, 0x52, 0x00, CSIPHY_DEFAULT_PARAMS},
+	{0x0C94, 0xD7, 0x00, CSIPHY_SKEW_CAL},
+	{0x0C5C, 0x00, 0x00, CSIPHY_SKEW_CAL},
+	{0x0C60, 0xBD, 0x00, CSIPHY_SKEW_CAL},
+	{0x0C64, 0x7F, 0x00, CSIPHY_SKEW_CAL},
+};
+
 static void csiphy_hw_version_read(struct csiphy_device *csiphy,
 				   struct device *dev)
 {
@@ -593,6 +711,9 @@ static void csiphy_gen2_config_lanes(struct csiphy_device *csiphy,
 		case CSIPHY_SETTLE_CNT_LOWER_BYTE:
 			val = settle_cnt & 0xff;
 			break;
+		case CSIPHY_SKEW_CAL:
+			/* TODO: support application of skew from dt flag */
+			continue;
 		case CSIPHY_DNP_PARAMS:
 			continue;
 		default:

-- 
2.48.1

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