linux-kernel - [PATCH] mtd: brcmnand: Add support for v6.2 controllers

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Message-Id: <1457652859-767-1-git-send-email-f.fainelli@gmail.com>
Date:	Thu, 10 Mar 2016 15:34:16 -0800
From:	Florian Fainelli <f.fainelli@...il.com>
To:	linux-mtd@...ts.infradead.org
Cc:	Florian Fainelli <f.fainelli@...il.com>,
	Kamal Dasu <kdasu.kdev@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Brian Norris <computersforpeace@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Simon Arlott <simon@...e.lp0.eu>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
	DEVICE TREE BINDINGS), linux-kernel@...r.kernel.org (open list),
	bcm-kernel-feedback-list@...adcom.com (open list:BROADCOM STB NAND
	FLASH DRIVER)
Subject: [PATCH] mtd: brcmnand: Add support for v6.2 controllers

Document and match the brcm,brcmnand-v6.2 compatible string, the controller has
a register layout identical to the v6.0 version and supports prefetch. Update the
command shift logic to account for v6.2 controller which are the first ones to
use a shift of 0 (6.1 used a shift of 24).

Signed-off-by: Kamal Dasu <kdasu.kdev@...il.com>
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt | 1 +
 drivers/mtd/nand/brcmnand/brcmnand.c                    | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt
index c2546ced9c02..deb24cbdda82 100644
--- a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt
+++ b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt
@@ -24,6 +24,7 @@ Required properties:
                          brcm,brcmnand-v5.0
                          brcm,brcmnand-v6.0
                          brcm,brcmnand-v6.1
+                         brcm,brcmnand-v6.2
                          brcm,brcmnand-v7.0
                          brcm,brcmnand-v7.1
                          brcm,brcmnand
diff --git a/drivers/mtd/nand/brcmnand/brcmnand.c b/drivers/mtd/nand/brcmnand/brcmnand.c
index e0528397306a..0b7a698cc233 100644
--- a/drivers/mtd/nand/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/brcmnand/brcmnand.c
@@ -601,7 +601,7 @@ static void brcmnand_wr_corr_thresh(struct brcmnand_host *host, u8 val)
 
 static inline int brcmnand_cmd_shift(struct brcmnand_controller *ctrl)
 {
-	if (ctrl->nand_version < 0x0700)
+	if (ctrl->nand_version < 0x0602)
 		return 24;
 	return 0;
 }
@@ -2115,6 +2115,7 @@ static const struct of_device_id brcmnand_of_match[] = {
 	{ .compatible = "brcm,brcmnand-v5.0" },
 	{ .compatible = "brcm,brcmnand-v6.0" },
 	{ .compatible = "brcm,brcmnand-v6.1" },
+	{ .compatible = "brcm,brcmnand-v6.2" },
 	{ .compatible = "brcm,brcmnand-v7.0" },
 	{ .compatible = "brcm,brcmnand-v7.1" },
 	{},
-- 
2.1.0