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| author | Marek Vasut <marek.vasut+renesas@gmail.com> | 2020-03-21 16:57:58 +0100 |
|---|---|---|
| committer | marex <marex@desktop.lan> | 2020-03-30 11:35:23 +0200 |
| commit | 4666521d19df4421be1b3c1042ac7ecfb351f884 (patch) | |
| tree | 83bbf10ac19dedabe9e12885a63f0c2fb6733be5 /board | |
| parent | 9cf09c799a389c07d26104bb6ca2079dcc835f37 (diff) | |
| download | u-boot-4666521d19df4421be1b3c1042ac7ecfb351f884.tar.gz u-boot-4666521d19df4421be1b3c1042ac7ecfb351f884.tar.bz2 u-boot-4666521d19df4421be1b3c1042ac7ecfb351f884.zip | |
ARM: rmobile: Implement PMIC reset on V2H Blanche
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@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Diffstat (limited to 'board')
| -rw-r--r-- | board/renesas/blanche/blanche.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/board/renesas/blanche/blanche.c b/board/renesas/blanche/blanche.c index 7232370d6f..471d80fc72 100644 --- a/board/renesas/blanche/blanche.c +++ b/board/renesas/blanche/blanche.c @@ -20,6 +20,7 @@ #include <dm.h> #include <dm/platform_data/serial_sh.h> #include <env.h> +#include <hang.h> #include <i2c.h> #include <linux/errno.h> #include <malloc.h> @@ -355,4 +356,23 @@ 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(); } |