diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0277-overlays-Add-combine-option-to-i2c-overlays.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0277-overlays-Add-combine-option-to-i2c-overlays.patch | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0277-overlays-Add-combine-option-to-i2c-overlays.patch b/target/linux/brcm2708/patches-4.14/950-0277-overlays-Add-combine-option-to-i2c-overlays.patch deleted file mode 100644 index 3981686cc8..0000000000 --- a/target/linux/brcm2708/patches-4.14/950-0277-overlays-Add-combine-option-to-i2c-overlays.patch +++ /dev/null @@ -1,104 +0,0 @@ -From 1b02fe3ab446613cadcfac08d611b90becb02189 Mon Sep 17 00:00:00 2001 -From: Phil Elwell <phil@raspberrypi.org> -Date: Wed, 18 Apr 2018 17:04:23 +0100 -Subject: [PATCH 277/454] overlays: Add 'combine' option to i2c overlays - -The i2c0-bcm2708 and i2c1-bcm2708 overlays allow the I2C pin usage to -be changed. The names also suggest they revert to the old i2c_bcm2708 -driver, but they don't. The newer i2c_bcm2835 driver forces -transactions to be combined where possible, but this breaks some -devices. - -Add an option to disable transaction combining, which is currently -implemented by reverting to the old driver. - -See: https://github.com/raspberrypi/firmware/issues/828 - -Signed-off-by: Phil Elwell <phil@raspberrypi.org> ---- - arch/arm/boot/dts/overlays/README | 12 ++++++++++-- - arch/arm/boot/dts/overlays/i2c0-bcm2708-overlay.dts | 8 ++++++++ - arch/arm/boot/dts/overlays/i2c1-bcm2708-overlay.dts | 9 +++++++++ - 3 files changed, 27 insertions(+), 2 deletions(-) - ---- a/arch/arm/boot/dts/overlays/README -+++ b/arch/arm/boot/dts/overlays/README -@@ -865,8 +865,9 @@ Params: addr Set the - - - Name: i2c0-bcm2708 --Info: Enable the i2c_bcm2708 driver for the i2c0 bus. Not all pin combinations -- are usable on all platforms. -+Info: Change i2c0 pin usage. Not all pin combinations are usable on all -+ platforms - platforms other then Compute Modules can only use this -+ to disable transaction combining. - Load: dtoverlay=i2c0-bcm2708,<param>=<val> - Params: sda0_pin GPIO pin for SDA0 (deprecated - use pins_*) - scl0_pin GPIO pin for SCL0 (deprecated - use pins_*) -@@ -874,15 +875,22 @@ Params: sda0_pin GPIO pin - pins_28_29 Use pins 28 and 29 - pins_44_45 Use pins 44 and 45 - pins_46_47 Use pins 46 and 47 -+ combine Allow transactions to be combined (default -+ "yes") - - - Name: i2c1-bcm2708 -+Info: Change i2c1 pin usage. Not all pin combinations are usable on all -+ platforms - platforms other then Compute Modules can only use this -+ to disable transaction combining. - Info: Enable the i2c_bcm2708 driver for the i2c1 bus - Load: dtoverlay=i2c1-bcm2708,<param>=<val> - Params: sda1_pin GPIO pin for SDA1 (2 or 44 - default 2) - scl1_pin GPIO pin for SCL1 (3 or 45 - default 3) - pin_func Alternative pin function (4 (alt0), 6 (alt2) - - default 4) -+ combine Allow transactions to be combined (default -+ "yes") - - - Name: i2s-gpio28-31 ---- a/arch/arm/boot/dts/overlays/i2c0-bcm2708-overlay.dts -+++ b/arch/arm/boot/dts/overlays/i2c0-bcm2708-overlay.dts -@@ -50,6 +50,13 @@ - }; - }; - -+ fragment@5 { -+ target = <&i2c0>; -+ __dormant__ { -+ compatible = "brcm,bcm2708-i2c"; -+ }; -+ }; -+ - __overrides__ { - sda0_pin = <&frag1>,"brcm,pins:0"; - scl0_pin = <&frag1>,"brcm,pins:4"; -@@ -57,5 +64,6 @@ - pins_28_29 = <0>,"-1+2-3-4"; - pins_44_45 = <0>,"-1-2+3-4"; - pins_46_47 = <0>,"-1-2-3+4"; -+ combine = <0>, "!5"; - }; - }; ---- a/arch/arm/boot/dts/overlays/i2c1-bcm2708-overlay.dts -+++ b/arch/arm/boot/dts/overlays/i2c1-bcm2708-overlay.dts -@@ -26,9 +26,18 @@ - brcm,function = <4>; /* alt 0 */ - }; - }; -+ -+ fragment@2 { -+ target = <&i2c1>; -+ __dormant__ { -+ compatible = "brcm,bcm2708-i2c"; -+ }; -+ }; -+ - __overrides__ { - sda1_pin = <&pins>,"brcm,pins:0"; - scl1_pin = <&pins>,"brcm,pins:4"; - pin_func = <&pins>,"brcm,function:0"; -+ combine = <0>, "!2"; - }; - }; |