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mediatek: add I2C for MT7981 SoC

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Add patch to support I2C on the MT7981 SoC.
This change will also be submitted to upstream Linux soon.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle 2023-03-10 19:55:09 +00:00
parent ad962c90c3
commit be6bbd9484
1 changed files with 74 additions and 0 deletions
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74
target/linux/mediatek/patches-5.15/810-i2c-mediatek-add-support-for-MT7981-SoC.patch Normal file
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@ -0,0 +1,74 @@
From bd4f7dae6a1f2fd65bb2112783c92ffe0839bc77 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Tue, 28 Feb 2023 23:53:56 +0000
Subject: [PATCH] i2c: mediatek: add support for MT7981 SoC
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
drivers/i2c/busses/i2c-mt65xx.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
--- a/drivers/i2c/busses/i2c-mt65xx.c
+++ b/drivers/i2c/busses/i2c-mt65xx.c
@@ -202,6 +202,34 @@ static const u16 mt_i2c_regs_v2[] = {
[OFFSET_DCM_EN] = 0xf88,
};
+static const u16 mt_i2c_regs_v3[] = {
+ [OFFSET_DATA_PORT] = 0x0,
+ [OFFSET_INTR_MASK] = 0x8,
+ [OFFSET_INTR_STAT] = 0xc,
+ [OFFSET_CONTROL] = 0x10,
+ [OFFSET_TRANSFER_LEN] = 0x14,
+ [OFFSET_TRANSAC_LEN] = 0x18,
+ [OFFSET_DELAY_LEN] = 0x1c,
+ [OFFSET_TIMING] = 0x20,
+ [OFFSET_START] = 0x24,
+ [OFFSET_EXT_CONF] = 0x28,
+ [OFFSET_LTIMING] = 0x2c,
+ [OFFSET_HS] = 0x30,
+ [OFFSET_IO_CONFIG] = 0x34,
+ [OFFSET_FIFO_ADDR_CLR] = 0x38,
+ [OFFSET_SDA_TIMING] = 0x3c,
+ [OFFSET_TRANSFER_LEN_AUX] = 0x44,
+ [OFFSET_CLOCK_DIV] = 0x48,
+ [OFFSET_SOFTRESET] = 0x50,
+ [OFFSET_SCL_MIS_COMP_POINT] = 0x90,
+ [OFFSET_SLAVE_ADDR] = 0x94,
+ [OFFSET_DEBUGSTAT] = 0xe4,
+ [OFFSET_DEBUGCTRL] = 0xe8,
+ [OFFSET_FIFO_STAT] = 0xf4,
+ [OFFSET_FIFO_THRESH] = 0xf8,
+ [OFFSET_DCM_EN] = 0xf88,
+};
+
struct mtk_i2c_compatible {
const struct i2c_adapter_quirks *quirks;
const u16 *regs;
@@ -365,6 +393,18 @@ static const struct mtk_i2c_compatible m
.max_dma_support = 32,
};
+static const struct mtk_i2c_compatible mt7981_compat = {
+ .regs = mt_i2c_regs_v3,
+ .pmic_i2c = 0,
+ .dcm = 0,
+ .auto_restart = 1,
+ .aux_len_reg = 1,
+ .timing_adjust = 1,
+ .dma_sync = 1,
+ .ltiming_adjust = 1,
+ .max_dma_support = 33
+};
+
static const struct mtk_i2c_compatible mt7986_compat = {
.quirks = &mt7622_i2c_quirks,
.regs = mt_i2c_regs_v1,
@@ -424,6 +464,7 @@ static const struct of_device_id mtk_i2c
{ .compatible = "mediatek,mt6577-i2c", .data = &mt6577_compat },
{ .compatible = "mediatek,mt6589-i2c", .data = &mt6589_compat },
{ .compatible = "mediatek,mt7622-i2c", .data = &mt7622_compat },
+ { .compatible = "mediatek,mt7981-i2c", .data = &mt7981_compat },
{ .compatible = "mediatek,mt7986-i2c", .data = &mt7986_compat },
{ .compatible = "mediatek,mt8173-i2c", .data = &mt8173_compat },
{ .compatible = "mediatek,mt8183-i2c", .data = &mt8183_compat },