bootcount: Add driver model I2C driver
This adds a generic I2C bootcounter adhering to driver model to replace
the previously removed legacy implementation.
There is no change in functionality, it can be used on any I2C device.
The device tree configuration may look like this for example:
bootcount {
compatible = "u-boot,bootcount-i2c";
i2cbcdev = <&i2c_rtc>;
offset = <0x11>;
};
Signed-off-by: Philip Richard Oberfichtner <pro@denx.de>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/drivers/bootcount/Kconfig b/drivers/bootcount/Kconfig
index 7a2548a..3c56253 100644
--- a/drivers/bootcount/Kconfig
+++ b/drivers/bootcount/Kconfig
@@ -109,6 +109,16 @@
Accesses to the backing store are performed using the write16
and read16 ops of DM RTC devices.
+config DM_BOOTCOUNT_I2C
+ bool "Driver Model boot counter on I2C device"
+ depends on DM_I2C
+ help
+ Enable support for the bootcounter on a generic i2c device, like a RTC
+ or PMIC. The bootcounter is configured in the device tree using the
+ "u-boot,bootcount-i2c" compatible string. It requires a phandle
+ 'i2cbcdev' for the i2c device and an 'offset' property used within the
+ device.
+
config DM_BOOTCOUNT_I2C_EEPROM
bool "Support i2c eeprom devices as a backing store for bootcount"
depends on I2C_EEPROM