linux-kernel - [PATCH v9 5/8] ARM: l2x0: add marvell,ecc-enable property for aurora

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Date:   Fri, 12 Jul 2019 15:49:01 +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 5/8] 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 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