linux-kernel - [PATCH v4 4/8] ARM: l2x0: support parity-enable/disable on aurora

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Message-Id: <20180112012755.20495-5-chris.packham@alliedtelesis.co.nz>
Date:   Fri, 12 Jan 2018 14:27:51 +1300
From:   Chris Packham <chris.packham@...iedtelesis.co.nz>
To:     linux@...linux.org.uk, bp@...en8.de, jlu@...gutronix.de
Cc:     Chris.Packham@...iedtelesis.co.nz,
        thomas.petazzoni@...e-electrons.com, kernel@...gutronix.de,
        gregory.clement@...e-electrons.com,
        Chris Packham <chris.packham@...iedtelesis.co.nz>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 4/8] 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 7d2d2a3c67d0..b70bee74750d 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -1505,6 +1505,13 @@ 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;
-- 
2.15.1