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authorTom Rini <trini@konsulko.com>2020-03-17 18:33:59 +0300
committerTom Rini <trini@konsulko.com>2020-03-17 18:33:59 +0300
commitb180e32ea39d03021655a31a19d527529a2eb980 (patch)
tree518505ebb4914d2e54f1ef898ad9ecb651355718 /doc
parent552c3d4c2d3a98658158fdb7213515d631f5e181 (diff)
parent80e8b8add057d2c947394d9d57fc2dcc7ff886d1 (diff)
downloadu-boot-b180e32ea39d03021655a31a19d527529a2eb980.tar.xz
Merge tag '20200316-for-next' of https://gitlab.denx.de/u-boot/custodians/u-boot-i2c into next
i2c: for next - i2c-gpio: make it possible to run deblock sequence on driver probe - i2c-gpio: add clock stretching support - updates the Designware I2C driver for high speed mode, fix a bug and add some improvements. - add DM support for memory based bootcounter driver
Diffstat (limited to 'doc')
-rw-r--r--doc/device-tree-bindings/i2c/i2c-gpio.txt4
-rw-r--r--doc/device-tree-bindings/misc/bootcounter.txt21
2 files changed, 25 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/i2c/i2c-gpio.txt b/doc/device-tree-bindings/i2c/i2c-gpio.txt
index ba56ed5dea..b06b829933 100644
--- a/doc/device-tree-bindings/i2c/i2c-gpio.txt
+++ b/doc/device-tree-bindings/i2c/i2c-gpio.txt
@@ -16,6 +16,10 @@ Optional:
The resulting transfer speed can be adjusted by setting the delay[us]
between gpio-toggle operations. Speed [Hz] = 1000000 / 4 * udelay[us],
It not defined, then default is 5us (~50KHz).
+* i2c-gpio,deblock
+ Run deblocking sequence when the driver gets probed.
+* i2c-gpio,scl-output-only;
+ Set if SCL is an output only
Example:
diff --git a/doc/device-tree-bindings/misc/bootcounter.txt b/doc/device-tree-bindings/misc/bootcounter.txt
new file mode 100644
index 0000000000..d32fbc37b2
--- /dev/null
+++ b/doc/device-tree-bindings/misc/bootcounter.txt
@@ -0,0 +1,21 @@
+U-Boot bootcounter Devicetree Binding
+=====================================
+
+The device tree node describes the U-Boot bootcounter
+memory based device binding.
+
+Required properties :
+
+- compatible : "u-boot,bootcount";
+- single-word : set this, if you have only one word space
+ for storing the bootcounter.
+
+Example
+-------
+
+MPC83xx based board:
+
+bootcount@0x13ff8 {
+ compatible = "u-boot,bootcount";
+ reg = <0x13ff8 0x08>;
+};