1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
From 9ae337317d5634569bda83dfc5e0658fce34b1e2 Mon Sep 17 00:00:00 2001
From: Weijie Gao <weijie.gao@mediatek.com>
Date: Mon, 25 Jul 2022 16:30:30 +0800
Subject: [PATCH 18/31] arm: dts: mt7622: add i2c support
Add both hardware and software i2c support for mt7622.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
---
arch/arm/dts/mt7622-rfb.dts | 18 ++++++++++++++++++
arch/arm/dts/mt7622.dtsi | 24 ++++++++++++++++++++++++
2 files changed, 42 insertions(+)
--- a/arch/arm/dts/mt7622-rfb.dts
+++ b/arch/arm/dts/mt7622-rfb.dts
@@ -159,6 +159,14 @@
};
};
+
+ i2c1_pins_default: i2c1-default {
+ mux {
+ function = "i2c";
+ groups = "i2c1_0";
+ };
+ };
+
};
&snfi {
@@ -249,3 +257,13 @@
&u3phy {
status = "okay";
};
+
+&soft_i2c {
+ status = "disabled";
+};
+
+&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_pins_default>;
+ status = "okay";
+};
--- a/arch/arm/dts/mt7622.dtsi
+++ b/arch/arm/dts/mt7622.dtsi
@@ -440,4 +440,28 @@
status = "disabled";
};
+ soft_i2c: soft_i2c@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "i2c-gpio";
+ gpios = <&gpio 56 GPIO_ACTIVE_HIGH>, /* SDA */
+ <&gpio 55 GPIO_ACTIVE_HIGH>; /* CLK */
+ i2c-gpio,delay-us = <5>;
+ status = "disabled";
+ };
+
+ i2c1: i2c@11008000 {
+ compatible = "mediatek,mt7622-i2c";
+ reg = <0x11008000 0x90>,
+ <0x11000180 0x80>;
+ interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_LOW>;
+ clock-div = <16>;
+ clocks = <&pericfg CLK_PERI_I2C1_PD>,
+ <&pericfg CLK_PERI_AP_DMA_PD>;
+ clock-names = "main", "dma";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
};
|
