From: Henry Chen <henryc.chen@mediatek.com>
To: Viresh Kumar <vireshk@kernel.org>,
Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Fan Chen <fan.chen@mediatek.com>,
Weiyi Lu <weiyi.lu@mediatek.com>,
James Liao <jamesjj.liao@mediatek.com>,
Kees Cook <keescook@chromium.org>, <linux-pm@vger.kernel.org>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Henry Chen <henryc.chen@mediatek.com>
Subject: [RFC RESEND PATCH 2/7] dt-bindings: soc: Add opp table on scpsys bindings
Date: Wed, 2 Jan 2019 22:09:53 +0800 [thread overview]
Message-ID: <1546438198-1677-3-git-send-email-henryc.chen@mediatek.com> (raw)
In-Reply-To: <1546438198-1677-1-git-send-email-henryc.chen@mediatek.com>
Add opp table on scpsys dt-bindings for Mediatek SoC.
Signed-off-by: Henry Chen <henryc.chen@mediatek.com>
---
Documentation/devicetree/bindings/opp/mtk-opp.txt | 24 +++++++++++++
.../devicetree/bindings/soc/mediatek/scpsys.txt | 42 ++++++++++++++++++++++
2 files changed, 66 insertions(+)
create mode 100644 Documentation/devicetree/bindings/opp/mtk-opp.txt
diff --git a/Documentation/devicetree/bindings/opp/mtk-opp.txt b/Documentation/devicetree/bindings/opp/mtk-opp.txt
new file mode 100644
index 0000000..036be1c
--- /dev/null
+++ b/Documentation/devicetree/bindings/opp/mtk-opp.txt
@@ -0,0 +1,24 @@
+Mediatek OPP bindings to descibe OPP nodes with level values
+
+OPP tables for devices on Mediatek platforms require an additional
+platform specific level value to be specified.
+This value is passed on to the mediatek Power Management Unit by the
+CPU, which then takes the necessary actions to set a voltage rail
+to an appropriate voltage based on the value passed.
+
+The bindings are based on top of the operating-points-v2 bindings
+described in Documentation/devicetree/bindings/opp/opp.txt
+Additional properties are described below.
+
+* OPP Table Node
+
+Required properties:
+- compatible: Allow OPPs to express their compatibility. It should be:
+ "operating-points-v2-mtk-level"
+
+* OPP Node
+
+Required properties:
+- mtk,level: On Mediatek platforms an OPP node can describe a positive value
+representing a level that's communicated with a our power management hardware
+which then translates it into a certain voltage on a voltage rail.
diff --git a/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
index b4728ce..299b526 100644
--- a/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
+++ b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
@@ -63,6 +63,10 @@ Optional properties:
- mfg_2d-supply: Power supply for the mfg_2d power domain
- mfg-supply: Power supply for the mfg power domain
+- operating-points-v2: Phandle to the OPP table for the Power domain.
+ Refer to Documentation/devicetree/bindings/power/power_domain.txt
+ and Documentation/devicetree/bindings/opp/mtk-opp.txt for more details
+
Example:
scpsys: scpsys@10006000 {
@@ -75,6 +79,27 @@ Example:
<&topckgen CLK_TOP_VENC_SEL>,
<&topckgen CLK_TOP_VENC_LT_SEL>;
clock-names = "mfg", "mm", "venc", "venc_lt";
+ operating-points-v2 = <&dvfsrc_opp_table>;
+
+ dvfsrc_opp_table: opp-table {
+ compatible = "operating-points-v2-mtk-level";
+
+ dvfsrc_vol_min: opp1 {
+ mtk,level = <MT8183_DVFSRC_LEVEL_1>;
+ };
+
+ dvfsrc_freq_medium: opp2 {
+ mtk,level = <MT8183_DVFSRC_LEVEL_2>;
+ };
+
+ dvfsrc_freq_max: opp3 {
+ mtk,level = <MT8183_DVFSRC_LEVEL_3>;
+ };
+
+ dvfsrc_vol_max: opp4 {
+ mtk,level = <MT8183_DVFSRC_LEVEL_4>;
+ };
+ };
};
Example consumer:
@@ -82,4 +107,21 @@ Example consumer:
afe: mt8173-afe-pcm@11220000 {
compatible = "mediatek,mt8173-afe-pcm";
power-domains = <&scpsys MT8173_POWER_DOMAIN_AUDIO>;
+ operating-points-v2 = <&aud_opp_table>;
+ };
+
+ aud_opp_table: aud-opp-table {
+ compatible = "operating-points-v2";
+ opp1 {
+ opp-hz = /bits/ 64 <793000000>;
+ required-opps = <&dvfsrc_vol_min>;
+ };
+ opp2 {
+ opp-hz = /bits/ 64 <910000000>;
+ required-opps = <&dvfsrc_vol_max>;
+ };
+ opp3 {
+ opp-hz = /bits/ 64 <1014000000>;
+ required-opps = <&dvfsrc_vol_max>;
+ };
};
--
1.9.1
next prev parent reply other threads:[~2019-01-02 14:10 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-02 14:09 [RFC RESEND PATCH 0/7] Add driver for dvfsrc and add support for active state of scpsys on mt8183 Henry Chen
2019-01-02 14:09 ` [RFC RESEND PATCH 1/7] dt-bindings: soc: Add DVFSRC driver bindings Henry Chen
2019-01-11 16:09 ` Rob Herring
2019-02-18 4:55 ` Henry Chen
2019-03-20 8:52 ` Nicolas Boichat
2019-01-02 14:09 ` Henry Chen [this message]
2019-01-03 18:45 ` [RFC RESEND PATCH 2/7] dt-bindings: soc: Add opp table on scpsys bindings Rob Herring
2019-01-07 11:04 ` Henry Chen
2019-01-02 14:09 ` [RFC RESEND PATCH 3/7] soc: mediatek: add support for the performance state Henry Chen
2019-01-03 22:57 ` Stephen Boyd
2019-01-07 11:06 ` Henry Chen
2019-01-02 14:09 ` [RFC RESEND PATCH 4/7] arm64: dts: mt8183: add performance state support of scpsys Henry Chen
2019-01-03 4:47 ` Viresh Kumar
2019-01-03 14:16 ` Henry Chen
2019-01-02 14:09 ` [RFC RESEND PATCH 5/7] soc: mediatek: add header for mediatek SIP interface Henry Chen
2019-01-02 14:09 ` [RFC RESEND PATCH 6/7] soc: mediatek: add MT8183 dvfsrc support Henry Chen
2019-01-03 23:08 ` Stephen Boyd
2019-01-07 11:09 ` Henry Chen
2019-01-02 14:09 ` [RFC RESEND PATCH 7/7] arm64: dts: mt8183: add dvfsrc related nodes Henry Chen
2019-01-03 4:48 ` [RFC RESEND PATCH 0/7] Add driver for dvfsrc and add support for active state of scpsys on mt8183 Viresh Kumar
2019-01-03 14:31 ` Henry Chen
2019-01-03 22:53 ` Stephen Boyd
2019-01-07 11:04 ` Henry Chen
2019-01-07 16:34 ` Georgi Djakov
2019-01-09 3:08 ` Henry Chen
2019-01-10 9:39 ` Georgi Djakov
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=1546438198-1677-3-git-send-email-henryc.chen@mediatek.com \
--to=henryc.chen@mediatek.com \
--cc=devicetree@vger.kernel.org \
--cc=fan.chen@mediatek.com \
--cc=jamesjj.liao@mediatek.com \
--cc=keescook@chromium.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=linux-pm@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=matthias.bgg@gmail.com \
--cc=robh+dt@kernel.org \
--cc=sboyd@kernel.org \
--cc=ulf.hansson@linaro.org \
--cc=vireshk@kernel.org \
--cc=weiyi.lu@mediatek.com \
/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).