From: Neil Armstrong <narmstrong@baylibre.com>
To: ulf.hansson@linaro.org, khilman@baylibre.com, devicetree@vger.kernel.org
Cc: baylibre-upstreaming@groups.io,
Neil Armstrong <narmstrong@baylibre.com>,
linux-mmc@vger.kernel.org, linux-amlogic@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/3] dt-bindings: mmc: meson-gx: add ddr-access-quirk property
Date: Mon, 13 May 2019 11:15:46 +0200 [thread overview]
Message-ID: <20190513091548.16674-2-narmstrong@baylibre.com> (raw)
In-Reply-To: <20190513091548.16674-1-narmstrong@baylibre.com>
On the Amlogic G12A SoC family, (only) the SDIO controller has a bug which
makes any DDR access from the MMC controller fail.
Add the amlogic,ddr-access-quirk property so signal this particular
controller has this bug and needs a quirk to work properly.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt b/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt
index 13e70409e8ac..f8914dab06c6 100644
--- a/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt
+++ b/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt
@@ -22,6 +22,10 @@ Required properties:
clock rate requested by the MMC core.
- resets : phandle of the internal reset line
+Optional properties:
+- amlogic,ddr-access-quirk: set when HW cannot access the DDR memory, like on
+ the G12A SDIO controller.
+
Example:
sd_emmc_a: mmc@70000 {
--
2.21.0
next prev parent reply other threads:[~2019-05-13 9:16 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-13 9:15 [PATCH 0/3] mmc: meson-gx: add ddr-access-quirk support Neil Armstrong
2019-05-13 9:15 ` Neil Armstrong [this message]
2019-05-14 17:50 ` [PATCH 1/3] dt-bindings: mmc: meson-gx: add ddr-access-quirk property Martin Blumenstingl
2019-05-15 12:43 ` Neil Armstrong
2019-05-15 11:37 ` Ulf Hansson
2019-05-15 12:43 ` Neil Armstrong
2019-05-13 9:15 ` [PATCH 2/3] mmc: meson-gx: add ddr-access-quirk Neil Armstrong
2019-05-13 17:47 ` Kevin Hilman
2019-05-14 17:58 ` Martin Blumenstingl
2019-05-15 12:45 ` Neil Armstrong
2019-05-15 21:18 ` Martin Blumenstingl
2019-05-16 9:09 ` Neil Armstrong
2019-05-15 11:34 ` Ulf Hansson
2019-05-15 12:51 ` Neil Armstrong
2019-05-13 9:15 ` [PATCH 3/3] arm64: dts: meson-g12a: add ddr-access-quirk property to SDIO controller Neil Armstrong
2019-05-14 17:51 ` Martin Blumenstingl
2019-05-13 9:58 ` [PATCH 0/3] mmc: meson-gx: add ddr-access-quirk support Jerome Brunet
2019-05-13 11:28 ` Jerome Brunet
2019-05-14 9:14 ` [baylibre-upstreaming] " guillaume La Roque
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