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

Luca Weiss
2022-05-22T16:29:30Z

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

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

Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
Signed-off-by: Luca Weiss <luca@z3ntu.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