ARM: shmobile: kzm9g: Support Real Time Clock
KZM-A9-GT board has RTC device r2025d at I2C channel 0
with slave address 0x64.
This patch enables reading and writing hardware real time clock on
KZM-A9-GT board. Interrupt is not yet supported.
How to test this patch using user space command.
Read RTC
# hwclock -r
Copy system clock to RTC
# hwclock -w
Shutdown and power off the board, and wait a while, then power on again.
Check RTC still keeps correct date.
Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/arch/arm/mach-shmobile/board-kzm9g.c b/arch/arm/mach-shmobile/board-kzm9g.c
index 7523e9e..a5cb113 100644
--- a/arch/arm/mach-shmobile/board-kzm9g.c
+++ b/arch/arm/mach-shmobile/board-kzm9g.c
@@ -338,6 +338,9 @@
static struct i2c_board_info i2c0_devices[] = {
{
I2C_BOARD_INFO("ak4648", 0x12),
+ },
+ {
+ I2C_BOARD_INFO("r2025sd", 0x32),
}
};