linux-kernel - [PATCH 2/7] i2c: qcom-cci: Add msm8953 compatible

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Message-Id: <20250810-msm8953-cci-v1-2-e83f104cabfc@lucaweiss.eu>
Date: Sun, 10 Aug 2025 17:37:53 +0200
From: Luca Weiss <luca@...aweiss.eu>
To: Loic Poulain <loic.poulain@....qualcomm.com>, 
 Robert Foss <rfoss@...nel.org>, Andi Shyti <andi.shyti@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Bartosz Golaszewski <brgl@...ev.pl>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, linux-i2c@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Luca Weiss <luca@...aweiss.eu>
Subject: [PATCH 2/7] i2c: qcom-cci: Add msm8953 compatible

Add a config for the v1.2.5 CCI found on msm8953 which has different
values in .params compared to others already supported in the driver.

Signed-off-by: Luca Weiss <luca@...aweiss.eu>
---
 drivers/i2c/busses/i2c-qcom-cci.c | 46 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/drivers/i2c/busses/i2c-qcom-cci.c b/drivers/i2c/busses/i2c-qcom-cci.c
index a3afa11a71a10dbb720ee9acb566991fe55b98a0..2e3ceafec6cc755ea6083f2e6b85240d1a6d9187 100644
--- a/drivers/i2c/busses/i2c-qcom-cci.c
+++ b/drivers/i2c/busses/i2c-qcom-cci.c
@@ -785,8 +785,54 @@ static const struct cci_data cci_v2_data = {
 	},
 };
 
+static const struct cci_data cci_msm8953_data = {
+	.num_masters = 2,
+	.queue_size = { 64, 16 },
+	.quirks = {
+		.max_write_len = 11,
+		.max_read_len = 12,
+	},
+	.params[I2C_MODE_STANDARD] = {
+		.thigh = 78,
+		.tlow = 114,
+		.tsu_sto = 28,
+		.tsu_sta = 28,
+		.thd_dat = 10,
+		.thd_sta = 77,
+		.tbuf = 118,
+		.scl_stretch_en = 0,
+		.trdhld = 6,
+		.tsp = 1
+	},
+	.params[I2C_MODE_FAST] = {
+		.thigh = 20,
+		.tlow = 28,
+		.tsu_sto = 21,
+		.tsu_sta = 21,
+		.thd_dat = 13,
+		.thd_sta = 18,
+		.tbuf = 32,
+		.scl_stretch_en = 0,
+		.trdhld = 6,
+		.tsp = 3
+	},
+	.params[I2C_MODE_FAST_PLUS] = {
+		.thigh = 16,
+		.tlow = 22,
+		.tsu_sto = 17,
+		.tsu_sta = 18,
+		.thd_dat = 16,
+		.thd_sta = 15,
+		.tbuf = 19,
+		.scl_stretch_en = 1,
+		.trdhld = 3,
+		.tsp = 3
+	},
+};
+
 static const struct of_device_id cci_dt_match[] = {
 	{ .compatible = "qcom,msm8226-cci", .data = &cci_v1_data},
+	{ .compatible = "qcom,msm8953-cci", .data = &cci_msm8953_data},
 	{ .compatible = "qcom,msm8974-cci", .data = &cci_v1_5_data},
 	{ .compatible = "qcom,msm8996-cci", .data = &cci_v2_data},
 

-- 
2.50.1