linux-pm.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Leonard Crestez <leonard.crestez@nxp.com>
To: Stephen Boyd <sboyd@kernel.org>,
	MyungJoo Ham <myungjoo.ham@samsung.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Rob Herring <robh+dt@kernel.org>
Cc: "Shawn Guo" <shawnguo@kernel.org>,
	"Michael Turquette" <mturquette@baylibre.com>,
	"Chanwoo Choi" <cw00.choi@samsung.com>,
	"Artur Świgoń" <a.swigon@partner.samsung.com>,
	"Saravana Kannan" <saravanak@google.com>,
	"Krzysztof Kozlowski" <krzk@kernel.org>,
	"Alexandre Bailon" <abailon@baylibre.com>,
	"Georgi Djakov" <georgi.djakov@linaro.org>,
	"Dong Aisheng" <aisheng.dong@nxp.com>,
	"Abel Vesa" <abel.vesa@nxp.com>, "Jacky Bai" <ping.bai@nxp.com>,
	"Anson Huang" <Anson.Huang@nxp.com>,
	"Fabio Estevam" <fabio.estevam@nxp.com>,
	"Viresh Kumar" <viresh.kumar@linaro.org>,
	"Will Deacon" <will@kernel.org>,
	"Mark Rutland" <mark.rutland@arm.com>,
	devicetree@vger.kernel.org, linux-pm@vger.kernel.org,
	linux-imx@nxp.com, kernel@pengutronix.de,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/7] dt-bindings: devfreq: Add bindings for imx ddr controller
Date: Mon, 12 Aug 2019 21:49:48 +0300	[thread overview]
Message-ID: <4cbddd75652c63aab19866c93faa0b784b56d53f.1565633880.git.leonard.crestez@nxp.com> (raw)
In-Reply-To: <cover.1565633880.git.leonard.crestez@nxp.com>
In-Reply-To: <cover.1565633880.git.leonard.crestez@nxp.com>

Add devicetree bindings for the i.MX DDR Controller on imx8m series
chips. It supports dynamic frequency switching between multiple data
rates and this is exposed to Linux via the devfreq subsystem.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
---
 .../devicetree/bindings/devfreq/imx-ddrc.yaml | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/devfreq/imx-ddrc.yaml

diff --git a/Documentation/devicetree/bindings/devfreq/imx-ddrc.yaml b/Documentation/devicetree/bindings/devfreq/imx-ddrc.yaml
new file mode 100644
index 000000000000..fa20280a682f
--- /dev/null
+++ b/Documentation/devicetree/bindings/devfreq/imx-ddrc.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/devfreq/imx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: i.MX DDR Controller
+
+maintainers:
+  - Leonard Crestez <leonard.crestez@nxp.com>
+
+properties:
+  compatible:
+    contains:
+      enum:
+       - fsl,imx8m-ddrc
+
+  reg:
+    maxItems: 1
+    description: DDR Controller registers
+
+  clocks:
+    minItems: 5
+    maxItems: 5
+
+  clock-names:
+    items:
+      - const: dram_core
+      - const: dram_pll
+      - const: dram_alt_root
+      - const: dram_alt
+      - const: dram_apb
+
+required:
+  - reg
+  - compatible
+  - clocks
+  - clock-names
+
+examples:
+  - |
+    #include <dt-bindings/clock/imx8mm-clock.h>
+    ddrc: dram-controller@3d400000 {
+        compatible = "fsl,imx8mm-ddrc", "fsl,imx8m-ddrc";
+        reg = <0x3d400000 0x400000>;
+        clock-names = "dram_core", "dram_pll", "dram_alt_root", "dram_alt", "dram_apb";
+        clocks = <&clk IMX8MM_CLK_DRAM_CORE>,
+                 <&clk IMX8MM_DRAM_PLL>,
+                 <&clk IMX8MM_CLK_DRAM_ALT_ROOT>,
+                 <&clk IMX8MM_CLK_DRAM_ALT>,
+                 <&clk IMX8MM_CLK_DRAM_APB>;
+        operating-points-v2 = <&ddrc_opp_table>;
+    };
-- 
2.17.1


  parent reply	other threads:[~2019-08-12 18:50 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-12 18:49 [PATCH 0/7] PM / devfreq: Add initial imx support Leonard Crestez
2019-08-12 18:49 ` [PATCH 1/7] clk: imx8m: Set CLK_GET_RATE_NOCACHE on dram_alt/apb Leonard Crestez
2019-08-12 18:49 ` [PATCH 2/7] dt-bindings: devfreq: Add bindings for generic imx buses Leonard Crestez
2019-08-12 19:46   ` Rob Herring
2019-08-13  1:32     ` Leonard Crestez
2019-08-13 14:06       ` Rob Herring
2019-08-13 14:59         ` Leonard Crestez
2019-08-12 18:49 ` [PATCH 3/7] PM / devfreq: Add generic imx bus driver Leonard Crestez
2019-08-12 18:49 ` Leonard Crestez [this message]
2019-08-12 19:51   ` [PATCH 4/7] dt-bindings: devfreq: Add bindings for imx ddr controller Rob Herring
2019-08-12 18:49 ` [PATCH 5/7] PM / devfreq: Add dynamic scaling " Leonard Crestez
2019-08-12 18:49 ` [PATCH 6/7] PM / devfreq: imx-ddrc: Measure bandwidth with perf Leonard Crestez
2019-08-12 18:49 ` [PATCH 7/7] arm64: dts: imx8mm: Add devfreq nodes Leonard Crestez
     [not found] ` <CGME20190812185002epcas1p1c528b12d20771cf4887907fdfd716e22@epcms1p2>
2019-08-13  2:25   ` [PATCH 2/7] dt-bindings: devfreq: Add bindings for generic imx buses MyungJoo Ham
     [not found] ` <CGME20190812185005epcas3p10a9a3dbb90489534222e093c63f27900@epcms1p3>
2019-08-13  2:33   ` [PATCH 3/7] PM / devfreq: Add generic imx bus driver MyungJoo Ham
2019-08-13  3:02     ` Leonard Crestez

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=4cbddd75652c63aab19866c93faa0b784b56d53f.1565633880.git.leonard.crestez@nxp.com \
    --to=leonard.crestez@nxp.com \
    --cc=Anson.Huang@nxp.com \
    --cc=a.swigon@partner.samsung.com \
    --cc=abailon@baylibre.com \
    --cc=abel.vesa@nxp.com \
    --cc=aisheng.dong@nxp.com \
    --cc=cw00.choi@samsung.com \
    --cc=devicetree@vger.kernel.org \
    --cc=fabio.estevam@nxp.com \
    --cc=georgi.djakov@linaro.org \
    --cc=kernel@pengutronix.de \
    --cc=krzk@kernel.org \
    --cc=kyungmin.park@samsung.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-imx@nxp.com \
    --cc=linux-pm@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=mturquette@baylibre.com \
    --cc=myungjoo.ham@samsung.com \
    --cc=ping.bai@nxp.com \
    --cc=robh+dt@kernel.org \
    --cc=saravanak@google.com \
    --cc=sboyd@kernel.org \
    --cc=shawnguo@kernel.org \
    --cc=viresh.kumar@linaro.org \
    --cc=will@kernel.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).