[U-Boot] [PATCH v1 2/3] spi: cadence_qspi: use "cdns, qspi-nor" as compatible

[Simon Goldschmidt]

Linux uses "cdns,qspi-nor" as compatible string for the cadence
qspi driver. To support Linux device trees, add this compatible
to the U-Boot driver while keeping the old "cadence,qspi" for
backwards compatibility for U-Boot device trees until all are
fixed.

Also update the binding docs accordingly.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>
---

 doc/device-tree-bindings/spi/spi-cadence.txt | 3 ++-
 drivers/spi/cadence_qspi.c                   | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/doc/device-tree-bindings/spi/spi-cadence.txt b/doc/device-tree-bindings/spi/spi-cadence.txt
index 74c82080fc..d7b30d5cff 100644
--- a/doc/device-tree-bindings/spi/spi-cadence.txt
+++ b/doc/device-tree-bindings/spi/spi-cadence.txt
@@ -2,7 +2,8 @@ Cadence QSPI controller device tree bindings
 --------------------------------------------
 
 Required properties:
-- compatible		: should be "cadence,qspi".
+- compatible		: should be "cdns,qspi-nor" ("cadence,qspi" is supported
+			  for compatibility to older U-Boot devicetrees only)
 - reg			: 1.Physical base address and size of SPI registers map.
 			  2. Physical base address & size of NOR Flash.
 - clocks		: Clock phandles (see clock bindings for details).
diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
index 29db6fa368..fef740beaa 100644
--- a/drivers/spi/cadence_qspi.c
+++ b/drivers/spi/cadence_qspi.c
@@ -329,7 +329,8 @@ static const struct dm_spi_ops cadence_spi_ops = {
 };
 
 static const struct udevice_id cadence_spi_ids[] = {
-	{ .compatible = "cadence,qspi" },
+	{ .compatible = "cdns,qspi-nor" },
+	{ .compatible = "cadence,qspi" }, /* U-Boot specific */
 	{ }
 };
 
-- 
2.17.1