[PATCH 3/3] ARM: rmobile: Implement PMIC reset on V2H Blanche
Marek Vasut
marek.vasut at gmail.com
Sat Mar 21 17:10:49 CET 2020
Add code to reset the board through PMIC, by writing the required
PMIC registers in the CPU reset handler.
Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>
---
board/renesas/blanche/blanche.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/board/renesas/blanche/blanche.c b/board/renesas/blanche/blanche.c
index 7232370d6f..0807967d6e 100644
--- a/board/renesas/blanche/blanche.c
+++ b/board/renesas/blanche/blanche.c
@@ -355,4 +355,23 @@ int dram_init_banksize(void)
void reset_cpu(ulong addr)
{
+ struct udevice *dev;
+ const u8 pmic_bus = 6;
+ const u8 pmic_addr = 0x58;
+ u8 data;
+ int ret;
+
+ ret = i2c_get_chip_for_busnum(pmic_bus, pmic_addr, 1, &dev);
+ if (ret)
+ hang();
+
+ ret = dm_i2c_read(dev, 0x13, &data, 1);
+ if (ret)
+ hang();
+
+ data |= BIT(1);
+
+ ret = dm_i2c_write(dev, 0x13, &data, 1);
+ if (ret)
+ hang();
}
--
2.25.1
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