linux-kernel - [PATCH 1/6] i2c: tegra: Add support for Tegra234 I2C

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Date:   Thu, 13 Jan 2022 19:00:18 +0530
From:   Akhil R <akhilrajeev@...dia.com>
To:     <robh+dt@...nel.org>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>, <mperttunen@...dia.com>,
        <ldewangan@...dia.com>, <digetx@...il.com>,
        <linux-i2c@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <akhilrajeev@...dia.com>
Subject: [PATCH 1/6] i2c: tegra: Add support for Tegra234 I2C

Add Tegra234 specific hw struct and compatible in i2c-tegra driver

Signed-off-by: Akhil R <akhilrajeev@...dia.com>
---
 drivers/i2c/busses/i2c-tegra.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 03cea10..3e8f3f5 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -1614,7 +1614,32 @@ static const struct tegra_i2c_hw_feature tegra194_i2c_hw = {
 	.has_interface_timing_reg = true,
 };
 
+static const struct tegra_i2c_hw_feature tegra234_i2c_hw = {
+	.has_continue_xfer_support = true,
+	.has_per_pkt_xfer_complete_irq = true,
+	.clk_divisor_hs_mode = 0x2,
+	.clk_divisor_std_mode = 0x4f,
+	.clk_divisor_fast_mode = 0x58,
+	.clk_divisor_fast_plus_mode = 0x24,
+	.has_config_load_reg = true,
+	.has_multi_master_mode = true,
+	.has_slcg_override_reg = true,
+	.has_mst_fifo = true,
+	.quirks = &tegra194_i2c_quirks,
+	.supports_bus_clear = true,
+	.has_apb_dma = false,
+	.tlow_std_mode = 0x8,
+	.thigh_std_mode = 0x7,
+	.tlow_fast_fastplus_mode = 0x1,
+	.thigh_fast_fastplus_mode = 0x1,
+	.setup_hold_time_std_mode = 0x08080808,
+	.setup_hold_time_fast_fast_plus_mode = 0x02020202,
+	.setup_hold_time_hs_mode = 0x090909,
+	.has_interface_timing_reg = true,
+};
+
 static const struct of_device_id tegra_i2c_of_match[] = {
+	{ .compatible = "nvidia,tegra234-i2c", .data = &tegra234_i2c_hw, },
 	{ .compatible = "nvidia,tegra194-i2c", .data = &tegra194_i2c_hw, },
 	{ .compatible = "nvidia,tegra186-i2c", .data = &tegra186_i2c_hw, },
 	{ .compatible = "nvidia,tegra210-i2c-vi", .data = &tegra210_i2c_hw, },
-- 
2.7.4