On Wed, May 31, 2017 at 02:19:56AM -0700, jiada_wang at mentor.com wrote:

From: Jiada Wang <redacted>

ECSPI contorller for iMX53 and iMX6 has few hardware issues
comparing to iMX51.
The change add possibility to detect which controller is used
to apply possible workaround and limitations.

Signed-off-by: Jiada Wang <redacted>
---
 .../devicetree/bindings/spi/fsl-imx-cspi.txt       |  1 +
 drivers/spi/spi-imx.c                              | 46 ++++++++++++++++++++--

[...]

+
 static inline unsigned spi_imx_get_fifosize(struct spi_imx_data *d)
 {
-	return is_imx51_ecspi(d) ? 64 : 8;
+	switch (d->devtype_data->devtype) {
+	case IMX51_ECSPI:
+	case IMX53_ECSPI:
+		return 64;
+	default:
+		return 8;
+	}
+}
+
+static inline bool spi_imx_has_dmamode(struct spi_imx_data *d)
+{
+	switch (d->devtype_data->devtype) {
+	case IMX35_CSPI:
+	case IMX51_ECSPI:
+	case IMX53_ECSPI:
+		return true;
+	default:
+		return false;
+	}
 }

Please add the fifosize and DMA capability to struct spi_imx_devtype_data, this
struct was introduced to hold SoC specific informations.

Sascha

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