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i2c: tegra: Add Tegra264 support

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Add support for Tegra264 SoC which supports 17 generic I2C controllers,
two of which are in the AON (always-on) partition of the SoC. In
addition to the features supported by Tegra194 it also supports a
SW mutex register to allow sharing the same I2C instance across
multiple firmware.

Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Signed-off-by: Kartik Rajput <kkartik@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
This commit is contained in:
Akhil R 2025-11-18 19:36:20 +05:30 committed by Wolfram Sang
parent 6077cfd716
commit 1ac9e16dd2
1 changed files with 33 additions and 0 deletions
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33
drivers/i2c/busses/i2c-tegra.c
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@ -1853,7 +1853,40 @@ static const struct tegra_i2c_hw_feature tegra256_i2c_hw = {
.has_mutex = true,
};
static const struct tegra_i2c_hw_feature tegra264_i2c_hw = {
.has_continue_xfer_support = true,
.has_per_pkt_xfer_complete_irq = true,
.clk_divisor_hs_mode = 1,
.clk_divisor_std_mode = 0x1d,
.clk_divisor_fast_mode = 0x15,
.clk_divisor_fast_plus_mode = 0x8,
.has_config_load_reg = true,
.has_multi_master_mode = true,
.has_slcg_override_reg = true,
.has_mst_fifo = true,
.has_mst_reset = true,
.quirks = &tegra194_i2c_quirks,
.supports_bus_clear = true,
.has_apb_dma = false,
.tlow_std_mode = 0x8,
.thigh_std_mode = 0x7,
.tlow_fast_mode = 0x2,
.thigh_fast_mode = 0x2,
.tlow_fastplus_mode = 0x2,
.thigh_fastplus_mode = 0x2,
.tlow_hs_mode = 0x4,
.thigh_hs_mode = 0x2,
.setup_hold_time_std_mode = 0x08080808,
.setup_hold_time_fast_mode = 0x02020202,
.setup_hold_time_fastplus_mode = 0x02020202,
.setup_hold_time_hs_mode = 0x090909,
.has_interface_timing_reg = true,
.enable_hs_mode_support = true,
.has_mutex = true,
};
static const struct of_device_id tegra_i2c_of_match[] = {
{ .compatible = "nvidia,tegra264-i2c", .data = &tegra264_i2c_hw, },
{ .compatible = "nvidia,tegra256-i2c", .data = &tegra256_i2c_hw, },
{ .compatible = "nvidia,tegra194-i2c", .data = &tegra194_i2c_hw, },
{ .compatible = "nvidia,tegra186-i2c", .data = &tegra186_i2c_hw, },