From: Neil Armstrong <narmstrong@baylibre.com>
To: ulf.hansson@linaro.org, khilman@baylibre.com, devicetree@vger.kernel.org
Cc: 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,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Subject: [PATCH v2 1/3] dt-bindings: mmc: meson-gx: add dram-access-quirk property
Date: Mon, 27 May 2019 14:43:05 +0200 [thread overview]
Message-ID: <20190527124307.32075-2-narmstrong@baylibre.com> (raw)
In-Reply-To: <20190527124307.32075-1-narmstrong@baylibre.com>
On the Amlogic G12A SoC family, (only) the SDIO controller has a bug which
makes any DRAM access from the MMC controller fail.
Add the amlogic,dram-access-quirk property so signal this particular
controller has this bug and needs a quirk to work properly.
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
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..ccc5358db131 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,dram-access-quirk: set when controller's internal DMA engine cannot access the
+ DRAM memory, like on the G12A dedicated SDIO controller.
+
Example:
sd_emmc_a: mmc@70000 {
--
2.21.0
WARNING: multiple messages have this Message-ID (diff)
From: Neil Armstrong <narmstrong@baylibre.com>
To: ulf.hansson@linaro.org, khilman@baylibre.com, devicetree@vger.kernel.org
Cc: Neil Armstrong <narmstrong@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-amlogic@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/3] dt-bindings: mmc: meson-gx: add dram-access-quirk property
Date: Mon, 27 May 2019 14:43:05 +0200 [thread overview]
Message-ID: <20190527124307.32075-2-narmstrong@baylibre.com> (raw)
In-Reply-To: <20190527124307.32075-1-narmstrong@baylibre.com>
On the Amlogic G12A SoC family, (only) the SDIO controller has a bug which
makes any DRAM access from the MMC controller fail.
Add the amlogic,dram-access-quirk property so signal this particular
controller has this bug and needs a quirk to work properly.
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
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..ccc5358db131 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,dram-access-quirk: set when controller's internal DMA engine cannot access the
+ DRAM memory, like on the G12A dedicated SDIO controller.
+
Example:
sd_emmc_a: mmc@70000 {
--
2.21.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Neil Armstrong <narmstrong@baylibre.com>
To: ulf.hansson@linaro.org, khilman@baylibre.com, devicetree@vger.kernel.org
Cc: Neil Armstrong <narmstrong@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-amlogic@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/3] dt-bindings: mmc: meson-gx: add dram-access-quirk property
Date: Mon, 27 May 2019 14:43:05 +0200 [thread overview]
Message-ID: <20190527124307.32075-2-narmstrong@baylibre.com> (raw)
In-Reply-To: <20190527124307.32075-1-narmstrong@baylibre.com>
On the Amlogic G12A SoC family, (only) the SDIO controller has a bug which
makes any DRAM access from the MMC controller fail.
Add the amlogic,dram-access-quirk property so signal this particular
controller has this bug and needs a quirk to work properly.
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
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..ccc5358db131 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,dram-access-quirk: set when controller's internal DMA engine cannot access the
+ DRAM memory, like on the G12A dedicated SDIO controller.
+
Example:
sd_emmc_a: mmc@70000 {
--
2.21.0
_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic
next prev parent reply other threads:[~2019-05-27 12:43 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-27 12:43 [PATCH v2 0/3] mmc: meson-gx: add dram-access-quirk support Neil Armstrong
2019-05-27 12:43 ` Neil Armstrong
2019-05-27 12:43 ` Neil Armstrong
2019-05-27 12:43 ` Neil Armstrong [this message]
2019-05-27 12:43 ` [PATCH v2 1/3] dt-bindings: mmc: meson-gx: add dram-access-quirk property Neil Armstrong
2019-05-27 12:43 ` Neil Armstrong
2019-05-28 8:53 ` Ulf Hansson
2019-05-28 8:53 ` Ulf Hansson
2019-05-28 8:53 ` Ulf Hansson
2019-05-27 12:43 ` [PATCH v2 2/3] mmc: meson-gx: add dram-access-quirk Neil Armstrong
2019-05-27 12:43 ` Neil Armstrong
2019-05-27 12:43 ` Neil Armstrong
2019-05-28 8:53 ` Ulf Hansson
2019-05-28 8:53 ` Ulf Hansson
2019-05-28 8:53 ` Ulf Hansson
2019-05-27 12:43 ` [PATCH v2 3/3] arm64: dts: meson: g12a: add SDIO controller Neil Armstrong
2019-05-27 12:43 ` Neil Armstrong
2019-05-27 12:43 ` Neil Armstrong
2019-06-03 22:10 ` Kevin Hilman
2019-06-03 22:10 ` Kevin Hilman
2019-06-03 22:10 ` Kevin Hilman
2019-06-03 22:10 ` Kevin Hilman
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