spi: bcm63xx-hsspi: add reset support (0eeadddb) · Commits · 戴 / test

bcm63xx arch resets the HSSPI controller at early boot. However, bmips arch needs to perform a reset when probing the driver. Signed-off-by:

drivers/spi/spi-bcm63xx-hsspi.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@
		#include <linux/spi/spi.h>
		#include <linux/mutex.h>
		#include <linux/of.h>
		#include <linux/reset.h>

		#define HSSPI_GLOBAL_CTRL_REG 0x0
		#define GLOBAL_CTRL_CS_POLARITY_SHIFT 0
		@@ -334,6 +335,7 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
		struct clk clk, pll_clk = NULL;
		int irq, ret;
		u32 reg, rate, num_cs = HSSPI_SPI_MAX_CS;
		struct reset_control *reset;

		irq = platform_get_irq(pdev, 0);
		if (irq < 0)
		@@ -348,10 +350,20 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
		if (IS_ERR(clk))
		return PTR_ERR(clk);

		reset = devm_reset_control_get_optional_exclusive(dev, NULL);
		if (IS_ERR(reset))
		return PTR_ERR(reset);

		ret = clk_prepare_enable(clk);
		if (ret)
		return ret;

		ret = reset_control_reset(reset);
		if (ret) {
		dev_err(dev, "unable to reset device: %d\n", ret);
		goto out_disable_clk;
		}

		rate = clk_get_rate(clk);
		if (!rate) {
		pll_clk = devm_clk_get(dev, "pll");