From: Rob Herring <robh@kernel.org>
To: Leonard Crestez <leonard.crestez@nxp.com>
Cc: "Stephen Boyd" <sboyd@kernel.org>,
"MyungJoo Ham" <myungjoo.ham@samsung.com>,
"Kyungmin Park" <kyungmin.park@samsung.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
"Shawn Guo" <shawnguo@kernel.org>,
"Chanwoo Choi" <cw00.choi@samsung.com>,
"Mark Rutland" <mark.rutland@arm.com>,
"Michael Turquette" <mturquette@baylibre.com>,
"Artur Świgoń" <a.swigon@partner.samsung.com>,
"Saravana Kannan" <saravanak@google.com>,
"Angus Ainslie" <angus@akkea.ca>,
"Martin Kepplinger" <martink@posteo.de>,
"Matthias Kaehlcke" <mka@chromium.org>,
"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>,
devicetree@vger.kernel.org, linux-pm@vger.kernel.org,
linux-clk@vger.kernel.org, linux-imx@nxp.com,
kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 3/6] dt-bindings: devfreq: Add bindings for imx ddr controller
Date: Mon, 4 Nov 2019 16:21:26 -0600 [thread overview]
Message-ID: <20191104222126.GB5218@bogus> (raw)
In-Reply-To: <b9a87c69eb603622303add4f0c02dd4c1262462a.1572558427.git.leonard.crestez@nxp.com>
On Thu, Oct 31, 2019 at 11:50:24PM +0200, Leonard Crestez wrote:
> 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 | 60 +++++++++++++++++++
.../bindings/memory-controllers/
> 1 file changed, 60 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..31db204e6845
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/devfreq/imx-ddrc.yaml
> @@ -0,0 +1,60 @@
> +# SPDX-License-Identifier: GPL-2.0
For new bindings:
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/devfreq/imx-devfreq.yaml#
Run 'make dt_binding_check'. This will fail as the filename doesn't
match.
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: i.MX DDR Controller
Perhaps i.MX8x as it's not all i.MX chips. And the filename too?
> +
> +maintainers:
> + - Leonard Crestez <leonard.crestez@nxp.com>
> +
> +properties:
> + compatible:
> + items:
> + - enum:
> + - fsl,imx8mn-ddrc
> + - fsl,imx8mm-ddrc
> + - fsl,imx8mq-ddrc
> + - const: fsl,imx8m-ddrc
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 4
> +
> + clock-names:
> + items:
> + - const: dram_core
> + - const: dram_pll
> + - const: dram_alt
> + - const: dram_apb
Drop 'dram_'
> +
> + operating-points-v2: true
> +
> + devfreq-events:
> + description: Phandle of PMU node
> + $ref: "/schemas/types.yaml#/definitions/phandle"
> +
> +required:
> + - reg
> + - compatible
> + - clocks
> + - clock-names
> +
> +additionalProperties: false
> +
> +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", "dram_apb";
> + clocks = <&clk IMX8MM_CLK_DRAM_CORE>,
> + <&clk IMX8MM_DRAM_PLL>,
> + <&clk IMX8MM_CLK_DRAM_ALT>,
> + <&clk IMX8MM_CLK_DRAM_APB>;
> + operating-points-v2 = <&ddrc_opp_table>;
> + };
> --
> 2.17.1
>
next prev parent reply other threads:[~2019-11-04 22:21 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-31 21:50 [PATCH v3 0/6] PM / devfreq: Add dynamic scaling for imx ddr controller Leonard Crestez
2019-10-31 21:50 ` [PATCH v3 1/6] clk: imx8m: Set CLK_GET_RATE_NOCACHE on dram clocks Leonard Crestez
2019-12-02 3:12 ` Shawn Guo
2019-12-02 4:19 ` Leonard Crestez
2019-10-31 21:50 ` [PATCH v3 2/6] clk: imx: Mark dram pll on 8mm and 8mn with CLK_GET_RATE_NOCACHE Leonard Crestez
2019-10-31 21:50 ` [PATCH v3 3/6] dt-bindings: devfreq: Add bindings for imx ddr controller Leonard Crestez
2019-11-04 22:21 ` Rob Herring [this message]
2019-11-05 19:25 ` Leonard Crestez
2019-11-05 20:13 ` Rob Herring
2019-10-31 21:50 ` [PATCH v3 4/6] PM / devfreq: Add dynamic scaling " Leonard Crestez
2019-12-02 5:38 ` Shawn Guo
2019-12-02 9:12 ` Leonard Crestez
2019-12-02 13:34 ` Shawn Guo
2019-10-31 21:50 ` [PATCH v3 5/6] PM / devfreq: imx-ddrc: Measure bandwidth with perf Leonard Crestez
2019-10-31 21:50 ` [PATCH v3 6/6] arm64: dts: imx8m: Add ddr controller nodes Leonard Crestez
2019-11-04 22:01 ` Rob Herring
2019-11-11 14:29 ` Leonard Crestez
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