linux-kernel - [PATCH v9 3/8] ARM: l2x0: support parity-enable/disable on aurora

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Message-Id: <20190712034904.5747-4-chris.packham@alliedtelesis.co.nz>
Date:   Fri, 12 Jul 2019 15:48:59 +1200
From:   Chris Packham <chris.packham@...iedtelesis.co.nz>
To:     bp@...en8.de, robh+dt@...nel.org, mark.rutland@....com,
        linux@...linux.org.uk, patches@...linux.org.uk, mchehab@...nel.org,
        james.morse@....com, jlu@...gutronix.de
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: [PATCH v9 3/8] ARM: l2x0: support parity-enable/disable on aurora

The aurora cache on the Marvell Armada-XP SoC supports the same tag
parity features as the other l2x0 cache implementations.

Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
[jlu@...gutronix.de: use aurora specific define AURORA_ACR_PARITY_EN]
Signed-off-by: Jan Luebbe <jlu@...gutronix.de>
---
 arch/arm/mm/cache-l2x0.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 83b733a1f1e6..46a616ec6b0c 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -1493,6 +1493,13 @@ static void __init aurora_of_parse(const struct device_node *np,
 		mask |= AURORA_ACR_FORCE_WRITE_POLICY_MASK;
 	}
 
+	if (of_property_read_bool(np, "arm,parity-enable")) {
+		mask |= AURORA_ACR_PARITY_EN;
+		val |= AURORA_ACR_PARITY_EN;
+	} else if (of_property_read_bool(np, "arm,parity-disable")) {
+		mask |= AURORA_ACR_PARITY_EN;
+	}
+
 	*aux_val &= ~mask;
 	*aux_val |= val;
 	*aux_mask &= ~mask;
-- 
2.22.0