[PATCH] spi: sh-msiof: drop support for R-Car H3 ES1.[01]

[Wolfram Sang <wsa+renesas@sang-engineering.com>]

These revisions have HW issues and are only early engineering samples
used internally. We simply drop the MSIOF support for them.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---

We got confirmation from Renesas for dropping ES1.* support.

 drivers/spi/spi-sh-msiof.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index 9bca3d076f05..e3b249c71175 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -24,6 +24,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/sh_dma.h>
+#include <linux/sys_soc.h>
 
 #include <linux/spi/sh_msiof.h>
 #include <linux/spi/spi.h>
@@ -1257,8 +1258,15 @@ static void sh_msiof_release_dma(struct sh_msiof_spi_priv *p)
 	dma_release_channel(ctlr->dma_tx);
 }
 
+static const struct soc_device_attribute sh_msiof_blacklist[] = {
+	/* Those have HW issues */
+	{ .soc_id = "r8a7795", .revision = "ES1.[01]" },
+	{ /* Sentinel */ }
+};
+
 static int sh_msiof_spi_probe(struct platform_device *pdev)
 {
+	const struct soc_device_attribute *attr;
 	struct spi_controller *ctlr;
 	const struct sh_msiof_chipdata *chipdata;
 	struct sh_msiof_spi_info *info;
@@ -1267,6 +1275,10 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
 	int i;
 	int ret;
 
+	attr = soc_device_match(sh_msiof_blacklist);
+	if (attr)
+		return -ENOTSUPP;
+
 	chipdata = of_device_get_match_data(&pdev->dev);
 	if (chipdata) {
 		info = sh_msiof_spi_parse_dt(&pdev->dev);
-- 
2.30.2