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Message-ID: <CAF6AEGtW29BtJPq1xDEtvtkPHFVWEd_QJk5FpJEQPbmofnS64Q@mail.gmail.com>
Date: Mon, 3 Aug 2020 09:06:22 -0700
From: Rob Clark <robdclark@...il.com>
To: Vinod Koul <vkoul@...nel.org>
Cc: Konrad Dybcio <konradybcio@...il.com>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
martin.botka1@...il.com, Sean Paul <sean@...rly.run>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>,
Andy Gross <agross@...nel.org>,
Kishon Vijay Abraham I <kishon@...com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Felipe Balbi <balbi@...nel.org>,
Jordan Crouse <jcrouse@...eaurora.org>,
zhengbin <zhengbin13@...wei.com>,
Jeffrey Hugo <jeffrey.l.hugo@...il.com>,
AngeloGioacchino Del Regno <kholk11@...il.com>,
Ben Dooks <ben.dooks@...ethink.co.uk>,
Krzysztof Wilczynski <kw@...ux.com>,
Harigovindan P <harigovi@...eaurora.org>,
Brian Masney <masneyb@...tation.org>,
Sam Ravnborg <sam@...nborg.org>,
Xiaozhe Shi <xiaozhes@...eaurora.org>,
Manu Gautam <mgautam@...eaurora.org>,
linux-arm-msm <linux-arm-msm@...r.kernel.org>,
dri-devel <dri-devel@...ts.freedesktop.org>,
freedreno <freedreno@...ts.freedesktop.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Linux USB List <linux-usb@...r.kernel.org>,
linux-clk <linux-clk@...r.kernel.org>
Subject: Re: [PATCH 4/9] drm/msm/dsi: Add phy configuration for SDM630/636/660
On Mon, Aug 3, 2020 at 4:00 AM Vinod Koul <vkoul@...nel.org> wrote:
>
> On 26-07-20, 13:12, Konrad Dybcio wrote:
> > These SoCs make use of the 14nm phy, but at different
> > addresses than other 14nm units.
> >
> > Signed-off-by: Konrad Dybcio <konradybcio@...il.com>
> > ---
> > .../devicetree/bindings/display/msm/dsi.txt | 1 +
> > drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 2 ++
> > drivers/gpu/drm/msm/dsi/phy/dsi_phy.h | 1 +
> > drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c | 18 ++++++++++++++++++
>
> Is there a reason why dsi phy needs to be here and not in phy subsystem
> drivers/phy/ ?
*maybe* it would be possible to split out all of the dsi (and hdmi)
phy to drivers/phy. But splitting out just the new ones wouldn't be
practical (it would duplicate a lot of code, and make the rest of the
dsi code have to deal with both cases). And unlike dp/usb-c I'm not
really sure I see an advantage to justify the churn.
BR,
-R
>
> > 4 files changed, 22 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/display/msm/dsi.txt b/Documentation/devicetree/bindings/display/msm/dsi.txt
> > index af95586c898f..7884fd7a85c1 100644
> > --- a/Documentation/devicetree/bindings/display/msm/dsi.txt
> > +++ b/Documentation/devicetree/bindings/display/msm/dsi.txt
> > @@ -87,6 +87,7 @@ Required properties:
> > * "qcom,dsi-phy-20nm"
> > * "qcom,dsi-phy-28nm-8960"
> > * "qcom,dsi-phy-14nm"
> > + * "qcom,dsi-phy-14nm-660"
> > * "qcom,dsi-phy-10nm"
> > * "qcom,dsi-phy-10nm-8998"
> > - reg: Physical base address and length of the registers of PLL, PHY. Some
> > diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
> > index f509ebd77500..009f5b843dd1 100644
> > --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
> > +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
> > @@ -499,6 +499,8 @@ static const struct of_device_id dsi_phy_dt_match[] = {
> > #ifdef CONFIG_DRM_MSM_DSI_14NM_PHY
> > { .compatible = "qcom,dsi-phy-14nm",
> > .data = &dsi_phy_14nm_cfgs },
> > + { .compatible = "qcom,dsi-phy-14nm-660",
> > + .data = &dsi_phy_14nm_660_cfgs },
> > #endif
> > #ifdef CONFIG_DRM_MSM_DSI_10NM_PHY
> > { .compatible = "qcom,dsi-phy-10nm",
> > diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
> > index 24b294ed3059..ef8672d7b123 100644
> > --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
> > +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
> > @@ -45,6 +45,7 @@ extern const struct msm_dsi_phy_cfg dsi_phy_28nm_lp_cfgs;
> > extern const struct msm_dsi_phy_cfg dsi_phy_20nm_cfgs;
> > extern const struct msm_dsi_phy_cfg dsi_phy_28nm_8960_cfgs;
> > extern const struct msm_dsi_phy_cfg dsi_phy_14nm_cfgs;
> > +extern const struct msm_dsi_phy_cfg dsi_phy_14nm_660_cfgs;
> > extern const struct msm_dsi_phy_cfg dsi_phy_10nm_cfgs;
> > extern const struct msm_dsi_phy_cfg dsi_phy_10nm_8998_cfgs;
> >
> > diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c
> > index 1594f1422372..519400501bcd 100644
> > --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c
> > +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c
> > @@ -161,3 +161,21 @@ const struct msm_dsi_phy_cfg dsi_phy_14nm_cfgs = {
> > .io_start = { 0x994400, 0x996400 },
> > .num_dsi_phy = 2,
> > };
> > +
> > +const struct msm_dsi_phy_cfg dsi_phy_14nm_660_cfgs = {
> > + .type = MSM_DSI_PHY_14NM,
> > + .src_pll_truthtable = { {false, false}, {true, false} },
> > + .reg_cfg = {
> > + .num = 1,
> > + .regs = {
> > + {"vcca", 17000, 32},
> > + },
> > + },
> > + .ops = {
> > + .enable = dsi_14nm_phy_enable,
> > + .disable = dsi_14nm_phy_disable,
> > + .init = dsi_14nm_phy_init,
> > + },
> > + .io_start = { 0xc994400, 0xc996000 },
> > + .num_dsi_phy = 2,
> > +};
> > --
> > 2.27.0
>
> --
> ~Vinod
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