Commit 1ac9e16d authored by Akhil R's avatar Akhil R Committed by Wolfram Sang
Browse files

i2c: tegra: Add Tegra264 support 



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: default avatarAkhil R <akhilrajeev@nvidia.com>
Signed-off-by: default avatarKartik Rajput <kkartik@nvidia.com>
Reviewed-by: default avatarJon Hunter <jonathanh@nvidia.com>
Acked-by: default avatarThierry Reding <treding@nvidia.com>
Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
parent 6077cfd7

drivers/i2c/busses/i2c-tegra.c

+33 −0
Original line number Diff line number Diff line
@@ -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, },