mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-06 01:59:54 -04:00
Code Issues Packages Projects Releases Wiki Activity

ARM: BCM53016: MR32: convert to Broadcom iProc I2C Driver

Browse Source 
replaces the bit-banged i2c-gpio provided i2c functionality
with the hardware in the SoC.

During review of the MR32, Florian Fainelli pointed out that the
SoC has a real I2C-controller. Furthermore, the connected pins
(SDA and SCL) would line up perfectly for use. Back then I couldn't
get it working though and I left it with i2c-gpio (which worked).

Now we know the reason: the interrupt was incorrectly specified.
(Hence, this patch depends on Florian Fainelli's
"ARM: dts: BCM5301X: Fix I2C controller interrupt" patch).

Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: Matthew Hagan <mnhagan88@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This commit is contained in:
Christian Lamparter
2021-10-28 09:03:44 +02:00
committed by Florian Fainelli
parent 3d2d52a0d1
commit de78800166
1 changed files with 28 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

62
arch/arm/boot/dts/bcm53016-meraki-mr32.dts
View File

@@ -84,40 +84,6 @@ blue {
max-brightness = <255>;
};
};
i2c {
/*
* The platform provided I2C does not budge.
* This is a replacement until I can figure
* out what are the missing bits...
*/
compatible = "i2c-gpio";
sda-gpios = <&chipcommon 5 GPIO_ACTIVE_HIGH>;
scl-gpios = <&chipcommon 4 GPIO_ACTIVE_HIGH>;
i2c-gpio,delay-us = <10>; /* close to 100 kHz */
#address-cells = <1>;
#size-cells = <0>;
current_sense: ina219@45 {
compatible = "ti,ina219";
reg = <0x45>;
shunt-resistor = <60000>; /* = 60 mOhms */
};
eeprom: eeprom@50 {
compatible = "atmel,24c64";
reg = <0x50>;
pagesize = <32>;
read-only;
#address-cells = <1>;
#size-cells = <1>;
mac_address: mac-address@66 {
reg = <0x66 0x6>;
};
};
};
};
&uart0 {
@@ -228,3 +194,31 @@ fixed-link {
};
};
};
&i2c0 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pinmux_i2c>;
clock-frequency = <100000>;
current_sense: ina219@45 {
compatible = "ti,ina219";
reg = <0x45>;
shunt-resistor = <60000>; /* = 60 mOhms */
};
eeprom: eeprom@50 {
compatible = "atmel,24c64";
reg = <0x50>;
pagesize = <32>;
read-only;
#address-cells = <1>;
#size-cells = <1>;
mac_address: mac-address@66 {
reg = <0x66 0x6>;
};
};
};