From: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Date: Tue, 3 Jan 2017 10:01:14 +0000 (+0100)
Subject: mtd: nand: tango: Reset pbus to raw mode in probe
X-Git-Tag: v4.10-rc5~35^2^2~1
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=8043d25b3c0fa0a8f531333707f682f03b6febdb;p=linux.git

mtd: nand: tango: Reset pbus to raw mode in probe

Linux should not expect the boot loader to properly configure the
peripheral bus "pad mode", so reset PBUS_PAD_MODE to raw.

Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
---

diff --git a/drivers/mtd/nand/tango_nand.c b/drivers/mtd/nand/tango_nand.c
index 78a65f672c87..4a5e948c62df 100644
--- a/drivers/mtd/nand/tango_nand.c
+++ b/drivers/mtd/nand/tango_nand.c
@@ -632,6 +632,8 @@ static int tango_nand_probe(struct platform_device *pdev)
 	if (IS_ERR(nfc->pbus_base))
 		return PTR_ERR(nfc->pbus_base);
 
+	writel_relaxed(MODE_RAW, nfc->pbus_base + PBUS_PAD_MODE);
+
 	clk = clk_get(&pdev->dev, NULL);
 	if (IS_ERR(clk))
 		return PTR_ERR(clk);