linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Daniel Baluta <daniel.baluta@oss.nxp.com>
To: broonie@kernel.org, pierre-louis.bossart@linux.intel.com,
	lgirdwood@gmail.com, robh+dt@kernel.org,
	ranjani.sridharan@linux.intel.com, kai.vehmanen@linux.intel.com
Cc: devicetree@vger.kernel.org, shawnguo@kernel.org,
	kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com,
	peter.ujfalusi@linux.intel.com, alsa-devel@alsa-project.org,
	linux-kernel@vger.kernel.org, s-anna@ti.com,
	Daniel Baluta <daniel.baluta@nxp.com>
Subject: [PATCH v2 2/2] dt-bindings: dsp: fsl: Add DSP optional clocks documentation
Date: Fri,  3 Sep 2021 17:53:40 +0300	[thread overview]
Message-ID: <20210903145340.225511-3-daniel.baluta@oss.nxp.com> (raw)
In-Reply-To: <20210903145340.225511-1-daniel.baluta@oss.nxp.com>

From: Daniel Baluta <daniel.baluta@nxp.com>

DSP node on the Linux kernel side must also take care of enabling
DAI/DMA related clocks.

By design we choose to manage DAI/DMA clocks from the kernel side because of
the architecture of some i.MX8 boards.

Clocks are handled by a special M4 core which runs a special firmware
called SCFW (System Controler firmware).

This communicates with A cores running Linux via a special Messaging
Unit and implements a custom API which is already implemented by the
Linux kernel i.MX clocks implementation.

Note that these clocks are optional. We can use the DSP without them.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
---
 .../devicetree/bindings/dsp/fsl,dsp.yaml      | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml b/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
index 7afc9f2be13a..1453668c0194 100644
--- a/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
+++ b/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
@@ -24,16 +24,49 @@ properties:
     maxItems: 1
 
   clocks:
+    minItems: 3
     items:
       - description: ipg clock
       - description: ocram clock
       - description: core clock
+      - description: esai0 core clock for accessing registers
+      - description: esai0 baud clock
+      - description: esai0 system clock
+      - description: esai0 spba clock required when ESAI is placed in slave mode
+      - description: SAI1 bus clock
+      - description: SAI1 master clock 0
+      - description: SAI1 master clock 1
+      - description: SAI1 master clock 2
+      - description: SAI1 master clock 3
+      - description: SAI3 bus clock
+      - description: SAI3 master clock 0
+      - description: SAI3 master clock 1
+      - description: SAI3 master clock 2
+      - description: SAI3 master clock 3
+      - description: SDMA3 root clock used for accessing registers
+
 
   clock-names:
+    minItems: 3
     items:
       - const: ipg
       - const: ocram
       - const: core
+      - const: esai0_core
+      - const: esai0_extal
+      - const: esai0_fsys
+      - const: esai0_spba
+      - const: sai1_bus
+      - const: sai1_mclk0
+      - const: sai1_mclk1
+      - const: sai1_mclk2
+      - const: sai1_mclk3
+      - const: sai3_bus
+      - const: sai3_mclk0
+      - const: sai3_mclk1
+      - const: sai3_mclk2
+      - const: sai3_mclk3
+      - const: smda3_root
 
   power-domains:
     description:
-- 
2.27.0


  parent reply	other threads:[~2021-09-03 14:54 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-03 14:53 [PATCH v2 0/2] Add code to manage DSP related clocks Daniel Baluta
2021-09-03 14:53 ` [PATCH v2 1/2] ASoC: SOF: imx: " Daniel Baluta
2021-09-03 16:06   ` Pierre-Louis Bossart
2021-09-03 14:53 ` Daniel Baluta [this message]
2021-09-03 16:53   ` [PATCH v2 2/2] dt-bindings: dsp: fsl: Add DSP optional clocks documentation Rob Herring
2021-09-04 14:50     ` Daniel Baluta
2021-09-07 13:09       ` Rob Herring
2021-09-09 11:20         ` Daniel Baluta
2021-09-09 17:15           ` Rob Herring

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=20210903145340.225511-3-daniel.baluta@oss.nxp.com \
    --to=daniel.baluta@oss.nxp.com \
    --cc=alsa-devel@alsa-project.org \
    --cc=broonie@kernel.org \
    --cc=daniel.baluta@nxp.com \
    --cc=devicetree@vger.kernel.org \
    --cc=festevam@gmail.com \
    --cc=kai.vehmanen@linux.intel.com \
    --cc=kernel@pengutronix.de \
    --cc=lgirdwood@gmail.com \
    --cc=linux-imx@nxp.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=peter.ujfalusi@linux.intel.com \
    --cc=pierre-louis.bossart@linux.intel.com \
    --cc=ranjani.sridharan@linux.intel.com \
    --cc=robh+dt@kernel.org \
    --cc=s-anna@ti.com \
    --cc=shawnguo@kernel.org \
    --subject='Re: [PATCH v2 2/2] dt-bindings: dsp: fsl: Add DSP optional clocks documentation' \
    /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

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).