1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
index 1492f5ee9aaa..a5cba14ac3d2 100644
--- a/drivers/spi/spi-dw-mmio.c
+++ b/drivers/spi/spi-dw-mmio.c
@@ -16,6 +16,7 @@
 #include <linux/spi/spi.h>
 #include <linux/scatterlist.h>
 #include <linux/module.h>
+#include <linux/of_gpio.h>
 
 #include "spi-dw.h"
 
@@ -70,6 +71,27 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
         dws->num_cs = 4;
         dws->max_freq = clk_get_rate(dwsmmio->clk);
 
+        if (pdev->dev.of_node) {
+                int i;
+
+                for (i = 0; i < dws->num_cs; i++) {
+                        int cs_gpio = of_get_named_gpio(pdev->dev.of_node,
+                                        "cs-gpios", i);
+
+                        if (cs_gpio == -EPROBE_DEFER) {
+                                ret = cs_gpio;
+                                goto out;
+                        }
+
+                        if (gpio_is_valid(cs_gpio)) {
+                                ret = devm_gpio_request(&pdev->dev, cs_gpio,
+                                                dev_name(&pdev->dev));
+                                if (ret)
+                                        goto out;
+                        }
+                }
+        }
+
         ret = dw_spi_add_host(&pdev->dev, dws);
         if (ret)
                 goto out;