From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org,
linux-mmc@vger.kernel.org, robh+dt@kernel.org,
ulf.hansson@linaro.org, jianxin.pan@amlogic.com
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, mark.rutland@arm.com,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Subject: [PATCH RFC v1 1/2] dt-bindings: mmc: Document the Amlogic Meson SDHC MMC host controller
Date: Mon, 8 Jul 2019 19:33:29 +0200 [thread overview]
Message-ID: <20190708173330.13217-2-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20190708173330.13217-1-martin.blumenstingl@googlemail.com>
This documents the devicetree bindings for the SDHC MMC host controller
found in Meson6, Meson8, Meson8b and Meson8m2 SoCs. It can use a
bus-width of 1/4/8-bit and it supports eMMC spec 4.4x/4.5x including
HS200 mode (up to 100MHz clock).
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
.../bindings/mmc/amlogic,meson-mx-sdhc.txt | 34 +++++++++++++++++++
1 file changed, 34 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdhc.txt
diff --git a/Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdhc.txt b/Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdhc.txt
new file mode 100644
index 000000000000..afe14210030c
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdhc.txt
@@ -0,0 +1,34 @@
+* Amlogic Meson6, Meson8, Meson8b and Meson8m2 SDHC controller
+
+The SDHC MMC host controller on Amlogic SoCs provides an eMMC and MMC
+card interface with 1/4/8-bit bus width.
+It supports eMMC spec 4.4x/4.5x including HS200 (up to 100MHz clock).
+
+This file documents the properties in addition to those available in
+the MMC core bindings, documented by mmc.txt.
+
+Required properties:
+ - compatible : must be one of
+ - "amlogic,meson8-sdhc"
+ - "amlogic,meson8b-sdhc"
+ - "amlogic,meson8m2-sdhc"
+ preceded by the generic "amlogic,meson-mx-sdhc"
+ - reg : register base address and size
+ - interrupts : SDHC controller interrupt
+ - clocks : phandle to clock providers
+ - clock-names : "pclk", "clkin0", "clkin1", "clkin2" and "clkin3"
+ ("pclk" is the module gate clock, and clkin are
+ the inputs to the internal clock mux)
+
+Examples:
+ mmc@8e00 {
+ compatible = "amlogic,meson8-sdhc", "amlogic,meson-mx-sdhc";
+ reg = <0x8e00 0x42>;
+ interrupts = <GIC_SPI 78 IRQ_TYPE_EDGE_RISING>;
+ clocks = <&clkc CLKID_SDHC>,
+ <&clkc CLKID_XTAL>,
+ <&clkc CLKID_FCLK_DIV4>,
+ <&clkc CLKID_FCLK_DIV3>,
+ <&clkc CLKID_FCLK_DIV5>;
+ clock-names = "pclk", "clkin0", "clkin1", "clkin2", "clkin3";
+ };
--
2.22.0
next prev parent reply other threads:[~2019-07-08 17:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-08 17:33 [PATCH RFC v1 0/2] Amlogic 32-bit Meson SDHC MMC controller driver Martin Blumenstingl
2019-07-08 17:33 ` Martin Blumenstingl [this message]
2019-07-24 20:04 ` [PATCH RFC v1 1/2] dt-bindings: mmc: Document the Amlogic Meson SDHC MMC host controller Rob Herring
2019-07-08 17:33 ` [PATCH RFC v1 2/2] mmc: host: meson-mx-sdhc: new driver for the Amlogic Meson SDHC host Martin Blumenstingl
2019-07-08 17:40 ` Martin Blumenstingl
2019-08-22 13:52 ` Ulf Hansson
2019-08-24 21:34 ` Martin Blumenstingl
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190708173330.13217-2-martin.blumenstingl@googlemail.com \
--to=martin.blumenstingl@googlemail.com \
--cc=devicetree@vger.kernel.org \
--cc=jianxin.pan@amlogic.com \
--cc=linux-amlogic@lists.infradead.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=robh+dt@kernel.org \
--cc=ulf.hansson@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).