linux-kernel - [PATCH 3/4] spi: bcm-qspi: Fix probe regression on iProc platforms

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Date:   Thu, 10 Sep 2020 08:25:38 -0700
From:   Ray Jui <ray.jui@...adcom.com>
To:     Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Kamal Dasu <kdasu.kdev@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>
Cc:     linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        Ray Jui <ray.jui@...adcom.com>
Subject: [PATCH 3/4] spi: bcm-qspi: Fix probe regression on iProc platforms

iProc chips have QSPI controller that does not have the MSPI_REV
offset. Reading from that offset will cause a bus error. Fix it by
having MSPI_REV query disabled in the generic compatible string.

Fixes: 3a01f04d74ef ("spi: bcm-qspi: Handle lack of MSPI_REV offset")
Link: https://lore.kernel.org/linux-arm-kernel/20200909211857.4144718-1-f.fainelli@gmail.com/T/#u
Signed-off-by: Ray Jui <ray.jui@...adcom.com>
---
 drivers/spi/spi-bcm-qspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-bcm-qspi.c b/drivers/spi/spi-bcm-qspi.c
index c5209b42b0d2..b78d47a4403c 100644
--- a/drivers/spi/spi-bcm-qspi.c
+++ b/drivers/spi/spi-bcm-qspi.c
@@ -1300,7 +1300,7 @@ static const struct of_device_id bcm_qspi_of_match[] = {
 	},
 	{
 		.compatible = "brcm,spi-bcm-qspi",
-		.data = &bcm_qspi_rev_data,
+		.data = &bcm_qspi_no_rev_data,
 	},
 	{
 		.compatible = "brcm,spi-bcm7216-qspi",
-- 
2.17.1