linux-kernel - Re: [PATCH v2 2/6] dt-bindings: memory: tegra: Add Tegra234 support

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Date:   Mon, 13 Dec 2021 17:21:46 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Jon Hunter <jonathanh@...dia.com>, linux-tegra@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v2 2/6] dt-bindings: memory: tegra: Add Tegra234 support

On Sun, Dec 12, 2021 at 07:46:06PM +0100, Krzysztof Kozlowski wrote:
> On 10/12/2021 17:47, Thierry Reding wrote:
> > From: Thierry Reding <treding@...dia.com>
> > 
> > Document the variant of the memory controller and external memory
> > controllers found on Tegra234 and add some memory client and SMMU
> > stream ID definitions for use in device tree files.
> > 
> > Reviewed-by: Rob Herring <robh@...nel.org>
> > Signed-off-by: Thierry Reding <treding@...dia.com>
> > ---
> > Changes in v2:
> > - conditionally set minItems for reg properties
> > 
> >  .../nvidia,tegra186-mc.yaml                   | 20 ++++++++++++
> >  include/dt-bindings/clock/tegra234-clock.h    |  9 ++++++
> >  include/dt-bindings/memory/tegra234-mc.h      | 32 +++++++++++++++++++
> >  3 files changed, 61 insertions(+)
> >  create mode 100644 include/dt-bindings/memory/tegra234-mc.h
> > 
> 
> (...)
> 
> >  /** @brief output of mux controlled by CLK_RST_CONTROLLER_CLK_SOURCE_SDMMC4 */
> > diff --git a/include/dt-bindings/memory/tegra234-mc.h b/include/dt-bindings/memory/tegra234-mc.h
> > new file mode 100644
> > index 000000000000..2662f70c15c6
> > --- /dev/null
> > +++ b/include/dt-bindings/memory/tegra234-mc.h
> > @@ -0,0 +1,32 @@
> > +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
> > +
> > +#ifndef DT_BINDINGS_MEMORY_TEGRA234_MC_H
> > +#define DT_BINDINGS_MEMORY_TEGRA234_MC_H
> > +
> > +/* special clients */
> > +#define TEGRA234_SID_INVALID		0x00
> > +#define TEGRA234_SID_PASSTHROUGH	0x7f
> > +
> > +
> > +/* NISO1 stream IDs */
> > +#define TEGRA234_SID_SDMMC4	0x02
> > +#define TEGRA234_SID_BPMP	0x10
> > +
> > +/*
> > + * memory client IDs
> > + */
> > +
> > +/* sdmmcd memory read client */
> > +#define TEGRA234_MEMORY_CLIENT_SDMMCRAB 0x63
> > +/* sdmmcd memory write client */
> > +#define TEGRA234_MEMORY_CLIENT_SDMMCWAB 0x67
> > +/* BPMP read client */
> > +#define TEGRA234_MEMORY_CLIENT_BPMPR 0x93
> > +/* BPMP write client */
> > +#define TEGRA234_MEMORY_CLIENT_BPMPW 0x94
> > +/* BPMPDMA read client */
> > +#define TEGRA234_MEMORY_CLIENT_BPMPDMAR 0x95
> > +/* BPMPDMA write client */
> > +#define TEGRA234_MEMORY_CLIENT_BPMPDMAW 0x96
> > +
> 
> This header is needed by the driver and DTS patches. One of us can apply
> it and provide to the other via stable-tag. I think Arnd and Olof prefer
> if headers are coming with DTS and are provided to other trees, so maybe
> you will take the bindings and provide a tag for me for the driver?

Yeah, once you're happy with the series (I've just sent out an updated
v3) I can apply this to the Tegra tree and send you a stable tag to pull
into your tree.

Thierry

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