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105 lines
2.6 KiB
Diff
105 lines
2.6 KiB
Diff
From de7880016665afe7fa7d40e1fafa859260d53ba1 Mon Sep 17 00:00:00 2001
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From: Christian Lamparter <chunkeey@gmail.com>
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Date: Thu, 28 Oct 2021 09:03:44 +0200
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Subject: [PATCH] ARM: BCM53016: MR32: convert to Broadcom iProc I2C Driver
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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replaces the bit-banged i2c-gpio provided i2c functionality
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with the hardware in the SoC.
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During review of the MR32, Florian Fainelli pointed out that the
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SoC has a real I2C-controller. Furthermore, the connected pins
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(SDA and SCL) would line up perfectly for use. Back then I couldn't
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get it working though and I left it with i2c-gpio (which worked).
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Now we know the reason: the interrupt was incorrectly specified.
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(Hence, this patch depends on Florian Fainelli's
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"ARM: dts: BCM5301X: Fix I2C controller interrupt" patch).
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Cc: Florian Fainelli <f.fainelli@gmail.com>
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Cc: Rafał Miłecki <zajec5@gmail.com>
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Cc: Matthew Hagan <mnhagan88@gmail.com>
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Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
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Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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---
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arch/arm/boot/dts/bcm53016-meraki-mr32.dts | 62 ++++++++++------------
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1 file changed, 28 insertions(+), 34 deletions(-)
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--- a/arch/arm/boot/dts/bcm53016-meraki-mr32.dts
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+++ b/arch/arm/boot/dts/bcm53016-meraki-mr32.dts
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@@ -84,40 +84,6 @@
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max-brightness = <255>;
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};
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};
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-
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- i2c {
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- /*
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- * The platform provided I2C does not budge.
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- * This is a replacement until I can figure
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- * out what are the missing bits...
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- */
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-
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- compatible = "i2c-gpio";
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- sda-gpios = <&chipcommon 5 GPIO_ACTIVE_HIGH>;
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- scl-gpios = <&chipcommon 4 GPIO_ACTIVE_HIGH>;
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- i2c-gpio,delay-us = <10>; /* close to 100 kHz */
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- #address-cells = <1>;
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- #size-cells = <0>;
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-
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- current_sense: ina219@45 {
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- compatible = "ti,ina219";
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- reg = <0x45>;
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- shunt-resistor = <60000>; /* = 60 mOhms */
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- };
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-
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- eeprom: eeprom@50 {
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- compatible = "atmel,24c64";
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- reg = <0x50>;
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- pagesize = <32>;
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- read-only;
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- #address-cells = <1>;
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- #size-cells = <1>;
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-
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- mac_address: mac-address@66 {
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- reg = <0x66 0x6>;
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- };
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- };
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- };
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};
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&uart0 {
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@@ -228,3 +194,31 @@
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};
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};
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};
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+
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+&i2c0 {
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+ status = "okay";
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+
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&pinmux_i2c>;
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+
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+ clock-frequency = <100000>;
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+
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+ current_sense: ina219@45 {
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+ compatible = "ti,ina219";
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+ reg = <0x45>;
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+ shunt-resistor = <60000>; /* = 60 mOhms */
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+ };
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+
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+ eeprom: eeprom@50 {
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+ compatible = "atmel,24c64";
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+ reg = <0x50>;
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+ pagesize = <32>;
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+ read-only;
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+ #address-cells = <1>;
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+ #size-cells = <1>;
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+
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+ mac_address: mac-address@66 {
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+ reg = <0x66 0x6>;
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+ };
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+ };
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+};
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