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| author | Jim Liu <jim.t90615@gmail.com> | 2024-04-23 14:38:42 +0800 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2024-05-03 12:22:58 -0600 |
| commit | 914b766a2a6b0f746b2e6fe3bf3d70881e6da610 (patch) | |
| tree | 424ae8a64abcc03f39c878e4558bcc87c26b2560 /drivers | |
| parent | 8024d577897d57d0b9ec2dd92449e06e7f74f0e0 (diff) | |
| download | u-boot-914b766a2a6b0f746b2e6fe3bf3d70881e6da610.zip u-boot-914b766a2a6b0f746b2e6fe3bf3d70881e6da610.tar.gz u-boot-914b766a2a6b0f746b2e6fe3bf3d70881e6da610.tar.bz2 | |
spi: npcm_pspi: Reset HW in driver probe
Reset HW to clear old status and use default data mode(8-bit).
Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/npcm_pspi.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/spi/npcm_pspi.c b/drivers/spi/npcm_pspi.c index eb14185..c944130 100644 --- a/drivers/spi/npcm_pspi.c +++ b/drivers/spi/npcm_pspi.c @@ -7,6 +7,7 @@ #include <dm.h> #include <spi.h> #include <clk.h> +#include <reset.h> #include <asm/gpio.h> #include <linux/iopoll.h> @@ -194,6 +195,7 @@ static int npcm_pspi_probe(struct udevice *bus) { struct npcm_pspi_priv *priv = dev_get_priv(bus); int node = dev_of_offset(bus); + struct reset_ctl reset; int ret; ret = clk_get_by_index(bus, 0, &priv->clk); @@ -205,6 +207,14 @@ static int npcm_pspi_probe(struct udevice *bus) gpio_request_by_name_nodev(offset_to_ofnode(node), "cs-gpios", 0, &priv->cs_gpio, GPIOD_IS_OUT| GPIOD_ACTIVE_LOW); + /* Reset HW */ + ret = reset_get_by_index(bus, 0, &reset); + if (!ret) { + reset_assert(&reset); + udelay(5); + reset_deassert(&reset); + } + return 0; } |