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Commit 383840d9 authored by Axel Lin's avatar Axel Lin Committed by Mark Brown
Browse files

spi: tegra114: Convert to use master->max_speed_hz 



Use master->max_speed_hz instead of tspi->spi_max_frequency, so spi core will
handle checking transfer speed.

In additional, since commit 052eb2d4 'spi: core: Set max_speed_hz of
spi_device default to max_speed_hz of controller',
spi core will also set default spi->max_speed_hz if it is not set.
So remove the duplicate code in tegra_spi_setup.

Signed-off-by: default avatarAxel Lin <axel.lin@ingics.com>
Acked-by: default avatarStephen Warren <swarren@nvidia.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 052eb2d4

drivers/spi/spi-tegra114.c

+3 −16
Original line number Diff line number Diff line
@@ -172,7 +172,6 @@ struct tegra_spi_data { 
	void __iomem				*base;

	phys_addr_t				phys;

	unsigned				irq;

	u32					spi_max_frequency;

	u32					cur_speed;



	struct spi_device			*cur_spi;
@@ -763,9 +762,6 @@ static int tegra_spi_setup(struct spi_device *spi) 


	BUG_ON(spi->chip_select >= MAX_CHIP_SELECT);



	/* Set speed to the spi max fequency if spi device has not set */

	spi->max_speed_hz = spi->max_speed_hz ? : tspi->spi_max_frequency;



	ret = pm_runtime_get_sync(tspi->dev);

	if (ret < 0) {

		dev_err(tspi->dev, "pm runtime failed, e = %d\n", ret);
@@ -1019,16 +1015,6 @@ static irqreturn_t tegra_spi_isr(int irq, void *context_data) 
	return IRQ_WAKE_THREAD;

}



static void tegra_spi_parse_dt(struct platform_device *pdev,

	struct tegra_spi_data *tspi)

{

	struct device_node *np = pdev->dev.of_node;



	if (of_property_read_u32(np, "spi-max-frequency",

				&tspi->spi_max_frequency))

		tspi->spi_max_frequency = 25000000; /* 25MHz */

}



static struct of_device_id tegra_spi_of_match[] = {

	{ .compatible = "nvidia,tegra114-spi", },

	{}
@@ -1050,8 +1036,9 @@ static int tegra_spi_probe(struct platform_device *pdev) 
	platform_set_drvdata(pdev, master);

	tspi = spi_master_get_devdata(master);



	/* Parse DT */

	tegra_spi_parse_dt(pdev, tspi);

	if (of_property_read_u32(pdev->dev.of_node, "spi-max-frequency",

				 &master->max_speed_hz))

		master->max_speed_hz = 25000000; /* 25MHz */



	/* the spi->mode bits understood by this driver: */

	master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;