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path: root/drivers/spi/spi-tegra20-slink.c
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Diffstat (limited to 'drivers/spi/spi-tegra20-slink.c')
-rw-r--r--drivers/spi/spi-tegra20-slink.c20
1 files changed, 3 insertions, 17 deletions
diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c
index be3a069879c3..e3c1b93e45d1 100644
--- a/drivers/spi/spi-tegra20-slink.c
+++ b/drivers/spi/spi-tegra20-slink.c
@@ -23,7 +23,6 @@
23#include <linux/dma-mapping.h> 23#include <linux/dma-mapping.h>
24#include <linux/dmapool.h> 24#include <linux/dmapool.h>
25#include <linux/err.h> 25#include <linux/err.h>
26#include <linux/init.h>
27#include <linux/interrupt.h> 26#include <linux/interrupt.h>
28#include <linux/io.h> 27#include <linux/io.h>
29#include <linux/kernel.h> 28#include <linux/kernel.h>
@@ -171,7 +170,6 @@ struct tegra_slink_data {
171 void __iomem *base; 170 void __iomem *base;
172 phys_addr_t phys; 171 phys_addr_t phys;
173 unsigned irq; 172 unsigned irq;
174 u32 spi_max_frequency;
175 u32 cur_speed; 173 u32 cur_speed;
176 174
177 struct spi_device *cur_spi; 175 struct spi_device *cur_spi;
@@ -761,10 +759,6 @@ static int tegra_slink_setup(struct spi_device *spi)
761 spi->mode & SPI_CPHA ? "" : "~", 759 spi->mode & SPI_CPHA ? "" : "~",
762 spi->max_speed_hz); 760 spi->max_speed_hz);
763 761
764 BUG_ON(spi->chip_select >= MAX_CHIP_SELECT);
765
766 /* Set speed to the spi max fequency if spi device has not set */
767 spi->max_speed_hz = spi->max_speed_hz ? : tspi->spi_max_frequency;
768 ret = pm_runtime_get_sync(tspi->dev); 762 ret = pm_runtime_get_sync(tspi->dev);
769 if (ret < 0) { 763 if (ret < 0) {
770 dev_err(tspi->dev, "pm runtime failed, e = %d\n", ret); 764 dev_err(tspi->dev, "pm runtime failed, e = %d\n", ret);
@@ -999,15 +993,6 @@ static irqreturn_t tegra_slink_isr(int irq, void *context_data)
999 return IRQ_WAKE_THREAD; 993 return IRQ_WAKE_THREAD;
1000} 994}
1001 995
1002static void tegra_slink_parse_dt(struct tegra_slink_data *tspi)
1003{
1004 struct device_node *np = tspi->dev->of_node;
1005
1006 if (of_property_read_u32(np, "spi-max-frequency",
1007 &tspi->spi_max_frequency))
1008 tspi->spi_max_frequency = 25000000; /* 25MHz */
1009}
1010
1011static const struct tegra_slink_chip_data tegra30_spi_cdata = { 996static const struct tegra_slink_chip_data tegra30_spi_cdata = {
1012 .cs_hold_time = true, 997 .cs_hold_time = true,
1013}; 998};
@@ -1053,7 +1038,6 @@ static int tegra_slink_probe(struct platform_device *pdev)
1053 master->unprepare_message = tegra_slink_unprepare_message; 1038 master->unprepare_message = tegra_slink_unprepare_message;
1054 master->auto_runtime_pm = true; 1039 master->auto_runtime_pm = true;
1055 master->num_chipselect = MAX_CHIP_SELECT; 1040 master->num_chipselect = MAX_CHIP_SELECT;
1056 master->bus_num = -1;
1057 1041
1058 platform_set_drvdata(pdev, master); 1042 platform_set_drvdata(pdev, master);
1059 tspi = spi_master_get_devdata(master); 1043 tspi = spi_master_get_devdata(master);
@@ -1062,7 +1046,9 @@ static int tegra_slink_probe(struct platform_device *pdev)
1062 tspi->chip_data = cdata; 1046 tspi->chip_data = cdata;
1063 spin_lock_init(&tspi->lock); 1047 spin_lock_init(&tspi->lock);
1064 1048
1065 tegra_slink_parse_dt(tspi); 1049 if (of_property_read_u32(tspi->dev->of_node, "spi-max-frequency",
1050 &master->max_speed_hz))
1051 master->max_speed_hz = 25000000; /* 25MHz */
1066 1052
1067 r = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1053 r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1068 if (!r) { 1054 if (!r) {