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spi: rockchip-sfc: Support rst_gpio to reset octal flash

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Change-Id: I06f8c18c8f948886c832d240bf79653248ec499c
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
This commit is contained in:
Jon Lin
2024-02-20 20:59:04 +08:00
committed by Tao Huang
parent 42eb7111ce
commit d2b14cba47
1 changed files with 14 additions and 0 deletions
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14
drivers/spi/spi-rockchip-sfc.c
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@@ -207,6 +207,7 @@ struct rockchip_sfc {
u32 max_iosize;
u32 dll_cells[SFC_MAX_CHIPSELECT_NUM];
u16 version;
struct gpio_desc *rst_gpio;
};
static int rockchip_sfc_reset(struct rockchip_sfc *sfc)
@@ -914,6 +915,19 @@ static int rockchip_sfc_probe(struct platform_device *pdev)
sfc->dma_buffer = virt_to_phys(sfc->buffer);
}
sfc->rst_gpio = devm_gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(sfc->rst_gpio)) {
dev_err(&pdev->dev, "invalid reset-gpios property in node\n");
ret = PTR_ERR(sfc->rst_gpio);
goto err_dma;
} else if (sfc->rst_gpio) {
dev_info(&pdev->dev, "reset OCTA Flash at first\n");
gpiod_set_value_cansleep(sfc->rst_gpio, 1);
mdelay(1);
gpiod_set_value_cansleep(sfc->rst_gpio, 0);
mdelay(1);
}
ret = spi_register_master(master);
if (ret)
goto err_register;