linux-kernel - [RFC PATCH 10/14] i2c: qcom-cci: add msm8974 compatible

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Message-Id: <20220522162802.208275-11-luca@z3ntu.xyz>
Date:   Sun, 22 May 2022 18:27:58 +0200
From:   Luca Weiss <luca@...tu.xyz>
To:     linux-arm-msm@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Loic Poulain <loic.poulain@...aro.org>,
        Robert Foss <robert.foss@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Todor Tomov <todor.too@...il.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        matti.lehtimaki@...il.com, Luca Weiss <luca@...tu.xyz>
Subject: [RFC PATCH 10/14] i2c: qcom-cci: add msm8974 compatible

From: Matti Lehtimäki <matti.lehtimaki@...il.com>

MSM8974 CCI is the same as MSM8916 except it has two masters.

Signed-off-by: Matti Lehtimäki <matti.lehtimaki@...il.com>
Signed-off-by: Luca Weiss <luca@...tu.xyz>
---
To note, the cci_v1_5_data variable name is just a bit arbitrary and
isn't meant to reflect IP version "1.5". I'd be happy to change the
variable name to something else.

 drivers/i2c/busses/i2c-qcom-cci.c | 35 +++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/drivers/i2c/busses/i2c-qcom-cci.c b/drivers/i2c/busses/i2c-qcom-cci.c
index 5c7cc862f08f..a68f17eb9dd0 100644
--- a/drivers/i2c/busses/i2c-qcom-cci.c
+++ b/drivers/i2c/busses/i2c-qcom-cci.c
@@ -725,6 +725,40 @@ static const struct cci_data cci_v1_data = {
 	},
 };
 
+static const struct cci_data cci_v1_5_data = {
+	.num_masters = 2,
+	.queue_size = { 64, 16 },
+	.quirks = {
+		.max_write_len = 10,
+		.max_read_len = 12,
+	},
+	.cci_clk_rate =  19200000,
+	.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
+	},
+};
+
 static const struct cci_data cci_v2_data = {
 	.num_masters = 2,
 	.queue_size = { 64, 16 },
@@ -773,6 +807,7 @@ static const struct cci_data cci_v2_data = {
 
 static const struct of_device_id cci_dt_match[] = {
 	{ .compatible = "qcom,msm8916-cci", .data = &cci_v1_data},
+	{ .compatible = "qcom,msm8974-cci", .data = &cci_v1_5_data},
 	{ .compatible = "qcom,msm8996-cci", .data = &cci_v2_data},
 	{ .compatible = "qcom,sdm845-cci", .data = &cci_v2_data},
 	{ .compatible = "qcom,sm8250-cci", .data = &cci_v2_data},
-- 
2.36.0