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From: Chris Packham <chris.packham@alliedtelesis.co.nz>
To: bp@alien8.de, robh+dt@kernel.org, mark.rutland@arm.com,
	linux@armlinux.org.uk, patches@armlinux.org.uk,
	mchehab@kernel.org, james.morse@arm.com, jlu@pengutronix.de
Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org,
	Chris Packham <chris.packham@alliedtelesis.co.nz>
Subject: [PATCH v9 5/8] ARM: l2x0: add marvell,ecc-enable property for aurora
Date: Fri, 12 Jul 2019 15:49:01 +1200
Message-ID: <20190712034904.5747-6-chris.packham@alliedtelesis.co.nz> (raw)
In-Reply-To: <20190712034904.5747-1-chris.packham@alliedtelesis.co.nz>

The aurora cache on the Marvell Armada-XP SoC supports ECC protection
for the L2 data arrays. Add a "marvell,ecc-enable" device tree property
which can be used to enable this.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
[jlu@pengutronix.de: use aurora specific define AURORA_ACR_ECC_EN]
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
---

Notes:
    Changes in v7:
    - remove marvell,ecc-disable

 arch/arm/mm/cache-l2x0.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 46a616ec6b0c..12c26eb88afb 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -1493,6 +1493,11 @@ static void __init aurora_of_parse(const struct device_node *np,
 		mask |= AURORA_ACR_FORCE_WRITE_POLICY_MASK;
 	}
 
+	if (of_property_read_bool(np, "marvell,ecc-enable")) {
+		mask |= AURORA_ACR_ECC_EN;
+		val |= AURORA_ACR_ECC_EN;
+	}
+
 	if (of_property_read_bool(np, "arm,parity-enable")) {
 		mask |= AURORA_ACR_PARITY_EN;
 		val |= AURORA_ACR_PARITY_EN;
-- 
2.22.0


  parent reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-12  3:48 [PATCH v9 0/8] EDAC drivers for Armada XP L2 and DDR Chris Packham
2019-07-12  3:48 ` [PATCH v9 1/8] ARM: aurora-l2: add prefix to MAX_RANGE_SIZE Chris Packham
2019-07-12  3:48 ` [PATCH v9 2/8] ARM: aurora-l2: add defines for parity and ECC registers Chris Packham
2019-07-12  3:48 ` [PATCH v9 3/8] ARM: l2x0: support parity-enable/disable on aurora Chris Packham
2019-07-12  3:49 ` [PATCH v9 4/8] dt-bindings: ARM: document marvell,ecc-enable binding Chris Packham
2019-07-12  3:49 ` Chris Packham [this message]
2019-07-12  3:49 ` [PATCH v9 6/8] EDAC: Add missing debugfs_create_x32 wrapper Chris Packham
2019-07-12  3:49 ` [PATCH v9 7/8] EDAC: Add driver for the Marvell Armada XP SDRAM and L2 cache ECC Chris Packham
2019-07-12  3:49 ` [PATCH v9 8/8] EDAC: armada_xp: Add support for more SoCs Chris Packham

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