Update the timing parameters of Tegra256 so that the signals are complaint
with the I2C specification for SCL low time.

Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
---
 drivers/i2c/busses/i2c-tegra.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index c0382c9a0430..470d0d32d571 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -1684,7 +1684,7 @@ static const struct tegra_i2c_hw_feature tegra256_i2c_hw = {
 	.clk_divisor_hs_mode = 7,
 	.clk_divisor_std_mode = 0x7a,
 	.clk_divisor_fast_mode = 0x40,
-	.clk_divisor_fast_plus_mode = 0x19,
+	.clk_divisor_fast_plus_mode = 0x14,
 	.has_config_load_reg = true,
 	.has_multi_master_mode = true,
 	.has_slcg_override_reg = true,
@@ -1695,14 +1695,13 @@ static const struct tegra_i2c_hw_feature tegra256_i2c_hw = {
 	.has_apb_dma = false,
 	.tlow_std_mode = 0x8,
 	.thigh_std_mode = 0x7,
-	.tlow_fast_mode = 0x3,
-	.thigh_fast_mode = 0x3,
-	.tlow_fastplus_mode = 0x3,
-	.thigh_fastplus_mode = 0x3,
+	.tlow_fast_mode = 0x4,
+	.thigh_fast_mode = 0x2,
+	.tlow_fastplus_mode = 0x4,
+	.thigh_fastplus_mode = 0x4,
 	.setup_hold_time_std_mode = 0x08080808,
-	.setup_hold_time_fast_mode = 0x02020202,
-	.setup_hold_time_fastplus_mode = 0x02020202,
-	.setup_hold_time_hs_mode = 0x090909,
+	.setup_hold_time_fast_mode = 0x04010101,
+	.setup_hold_time_fastplus_mode = 0x04020202,
 	.has_interface_timing_reg = true,
 };
 
-- 
2.50.1

On Tue, Nov 18, 2025 at 07:36:17PM +0530, Akhil R wrote:
> Update the timing parameters of Tegra256 so that the signals are complaint

Nit: "compliant"

> with the I2C specification for SCL low time.
> 
> Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
> Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
> ---
>  drivers/i2c/busses/i2c-tegra.c | 15 +++++++--------
>  1 file changed, 7 insertions(+), 8 deletions(-)

Acked-by: Thierry Reding <treding@nvidia.com>