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SubjectRE: [EXT] Re: [PATCH v3 04/10] phy: Add HDMI configuration options
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Thanks your comments,

> -----Original Message-----
> From: Vinod Koul <vkoul@kernel.org>
> Sent: 2022年11月10日 15:39
> To: Sandor Yu <sandor.yu@nxp.com>
> Cc: dri-devel@lists.freedesktop.org; devicetree@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org;
> linux-phy@lists.infradead.org; andrzej.hajda@intel.com;
> neil.armstrong@linaro.org; robert.foss@linaro.org;
> Laurent.pinchart@ideasonboard.com; jonas@kwiboo.se;
> jernej.skrabec@gmail.com; robh+dt@kernel.org;
> krzysztof.kozlowski+dt@linaro.org; shawnguo@kernel.org;
> s.hauer@pengutronix.de; kernel@pengutronix.de; dl-linux-imx
> <linux-imx@nxp.com>; tzimmermann@suse.de; lyude@redhat.com;
> javierm@redhat.com; ville.syrjala@linux.intel.com; sam@ravnborg.org;
> jani.nikula@intel.com; maxime@cerno.tech;
> penguin-kernel@i-love.sakura.ne.jp; Oliver Brown <oliver.brown@nxp.com>
> Subject: [EXT] Re: [PATCH v3 04/10] phy: Add HDMI configuration options
>
> Caution: EXT Email
>
> On 08-11-22, 21:00, Sandor Yu wrote:
> > Allow HDMI PHYs to be configured through the generic functions through
> > a custom structure added to the generic union.
> >
> > The parameters added here are based on HDMI PHY implementation
> > practices. The current set of parameters should cover the potential
> > users.
>
> Is there any dpendency b/w phy and hdmi, I dont see anything in cover..
>
> Pls consider splitting the phy series ..
Both HDMI/DP and PHY patch set depend on each other to pass build.
HDMI driver depend on phy-hdmi.h and
PHY driver depend on cdns-mhdp-mailbox.h to pass build.
The followed description had in cover patch:
"The patch set compose of DRM bridge drivers and PHY drivers.
Both of them need the followed two patches to pass build.
drm: bridge: cadence: convert mailbox functions to macro functions
phy: Add HDMI configuration options"

>
> >
> > Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
> > ---
> > include/linux/phy/phy-hdmi.h | 33
> +++++++++++++++++++++++++++++++++
> > include/linux/phy/phy.h | 7 ++++++-
> > 2 files changed, 39 insertions(+), 1 deletion(-) create mode 100644
> > include/linux/phy/phy-hdmi.h
> >
> > diff --git a/include/linux/phy/phy-hdmi.h
> > b/include/linux/phy/phy-hdmi.h new file mode 100644 index
> > 000000000000..73a32eb535b0
> > --- /dev/null
> > +++ b/include/linux/phy/phy-hdmi.h
> > @@ -0,0 +1,33 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * Copyright 2022 NXP
> > + */
> > +
> > +#ifndef __PHY_HDMI_H_
> > +#define __PHY_HDMI_H_
> > +
> > +enum hdmi_phy_colorspace {
> > + HDMI_PHY_COLORSPACE_RGB,
> > + HDMI_PHY_COLORSPACE_YUV422,
> > + HDMI_PHY_COLORSPACE_YUV444,
> > + HDMI_PHY_COLORSPACE_YUV420,
> > + HDMI_PHY_COLORSPACE_RESERVED4,
> > + HDMI_PHY_COLORSPACE_RESERVED5,
> > + HDMI_PHY_COLORSPACE_RESERVED6,
> > +};
> kernel-doc style comments here too please
OK, I will add it.
>
> > +
> > +/**
> > + * struct phy_configure_opts_hdmi - HDMI configuration set
> > + * @pixel_clk_rate: Pixel clock of video modes in KHz.
> > + * @bpc: Maximum bits per color channel.
> > + * @color_space: Colorspace in enum hdmi_phy_colorspace.
> > + *
> > + * This structure is used to represent the configuration state of a HDMI phy.
> > + */
> > +struct phy_configure_opts_hdmi {
> > + unsigned int pixel_clk_rate;
> > + unsigned int bpc;
> > + enum hdmi_phy_colorspace color_space; };
> > +
> > +#endif /* __PHY_HDMI_H_ */
> > diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index
> > b1413757fcc3..6f6873ea7270 100644
> > --- a/include/linux/phy/phy.h
> > +++ b/include/linux/phy/phy.h
> > @@ -17,6 +17,7 @@
> > #include <linux/regulator/consumer.h>
> >
> > #include <linux/phy/phy-dp.h>
> > +#include <linux/phy/phy-hdmi.h>
> > #include <linux/phy/phy-lvds.h>
> > #include <linux/phy/phy-mipi-dphy.h>
> >
> > @@ -42,7 +43,8 @@ enum phy_mode {
> > PHY_MODE_MIPI_DPHY,
> > PHY_MODE_SATA,
> > PHY_MODE_LVDS,
> > - PHY_MODE_DP
> > + PHY_MODE_DP,
> > + PHY_MODE_HDMI,
> > };
> >
> > enum phy_media {
> > @@ -60,11 +62,14 @@ enum phy_media {
> > * the DisplayPort protocol.
> > * @lvds: Configuration set applicable for phys supporting
> > * the LVDS phy mode.
> > + * @hdmi: Configuration set applicable for phys supporting
> > + * the HDMI phy mode.
> > */
> > union phy_configure_opts {
> > struct phy_configure_opts_mipi_dphy mipi_dphy;
> > struct phy_configure_opts_dp dp;
> > struct phy_configure_opts_lvds lvds;
> > + struct phy_configure_opts_hdmi hdmi;
> > };
> >
> > /**
> > --
> > 2.34.1
>
> --
> ~Vinod

B.R
Sandor
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