The patch
dt-bindings: sound: omap-mcpdm: Update documentation for pdmclk
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
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Thanks, Mark
From 22cc062c4dfb16330fe18e8d7e155d733fd59e61 Mon Sep 17 00:00:00 2001
From: Peter Ujfalusi peter.ujfalusi@ti.com Date: Wed, 14 Nov 2018 14:46:30 +0200 Subject: [PATCH] dt-bindings: sound: omap-mcpdm: Update documentation for pdmclk
McPDM module receives it's functional clock from external source. This clock is the pdmclk provided by the twl6040 audio IC. If the clock is not available all register accesses to McPDM fails and the module is not operational.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com Acked-by: Rob Herring robh@kernel.org Signed-off-by: Mark Brown broonie@kernel.org --- Documentation/devicetree/bindings/sound/omap-mcpdm.txt | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/omap-mcpdm.txt b/Documentation/devicetree/bindings/sound/omap-mcpdm.txt index 5f4e68ca228c..ff98a0cb5b3f 100644 --- a/Documentation/devicetree/bindings/sound/omap-mcpdm.txt +++ b/Documentation/devicetree/bindings/sound/omap-mcpdm.txt @@ -7,6 +7,8 @@ Required properties: <L3 interconnect address, size>; - interrupts: Interrupt number for McPDM - ti,hwmods: Name of the hwmod associated to the McPDM +- clocks: phandle for the pdmclk provider, likely <&twl6040> +- clock-names: Must be "pdmclk"
Example:
@@ -18,3 +20,11 @@ mcpdm: mcpdm@40132000 { interrupt-parent = <&gic>; ti,hwmods = "mcpdm"; }; + +In board DTS file the pdmclk needs to be added: + +&mcpdm { + clocks = <&twl6040>; + clock-names = "pdmclk"; + status = "okay"; +};