linux-kernel - [PATCH v7 6/9] ARM: l2x0: add marvell,ecc-enable property for aurora

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Message-Id: <20181122001142.19187-7-chris.packham@alliedtelesis.co.nz>
Date:   Thu, 22 Nov 2018 13:11:39 +1300
From:   Chris Packham <chris.packham@...iedtelesis.co.nz>
To:     linux@...linux.org.uk, bp@...en8.de, arnd@...db.de,
        jlu@...gutronix.de, gregory.clement@...tlin.com,
        linux-arm-kernel@...ts.infradead.org
Cc:     devicetree@...r.kernel.org, linux-edac@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: [PATCH v7 6/9] ARM: l2x0: add marvell,ecc-enable property for aurora

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@...iedtelesis.co.nz>
[jlu@...gutronix.de: use aurora specific define AURORA_ACR_ECC_EN]
Signed-off-by: Jan Luebbe <jlu@...gutronix.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 b70bee74750d..e5380f7b14a5 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -1505,6 +1505,11 @@ 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;
-- 
2.19.1