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Date: Mon, 15 Feb 2021 11:27:14 -0500
From: Jonathan Marek <jonathan@...ek.ca>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: "open list:DRM DRIVER FOR MSM ADRENO GPU"
<linux-arm-msm@...r.kernel.org>, Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>,
open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] arm64: dts: qcom: sm8250: fix display nodes
On 2/11/21 3:05 PM, Dmitry Baryshkov wrote:
> On Thu, 11 Feb 2021 at 21:11, Jonathan Marek <jonathan@...ek.ca> wrote:
>>
>> Apply these fixes to the newly added sm8250 display ndoes
>> - Use sm8250 compatibles instead of sdm845 compatibles
>> - Remove "notused" interconnect (which apparently was blindly copied from
>> my old patches)
>> - Use dispcc node example from dt-bindings, removing clocks which aren't
>> documented or used by the driver and fixing the region size.
>>
>> Note: also removed the mmcx-supply for dispcc which wasn't documented when
>> it was added. I would have left it there but it is also breaking my
>> use-case (setting a lower power level than what the bootloader sets?).
>
> In our use case dispcc does not work w/o mmcx-supply. Compare this
> with the downstream kernel, which actively uses MMCX domain.
>
I sent a v2/v3 leaving the mmcx-supply untouched (I can fix my problem
by using rpmhpd_opp_nom in the mmcx-supply instead, so its not a problem
with adding it to dispcc). But mmcx-supply still needs to be added to
documentation.
>> Fixes: 7c1dffd471b1 ("arm64: dts: qcom: sm8250.dtsi: add display system nodes")
>> Signed-off-by: Jonathan Marek <jonathan@...ek.ca>
>> ---
>> arch/arm64/boot/dts/qcom/sm8250.dtsi | 34 ++++++++--------------------
>> 1 file changed, 9 insertions(+), 25 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
>> index 947e1accae3a..20a3ff30e924 100644
>> --- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
>> @@ -2323,14 +2323,13 @@ usb_2_dwc3: dwc3@...0000 {
>> };
>>
>> mdss: mdss@...0000 {
>> - compatible = "qcom,sdm845-mdss";
>> + compatible = "qcom,sm8250-mdss";
>> reg = <0 0x0ae00000 0 0x1000>;
>> reg-names = "mdss";
>>
>> - interconnects = <&gem_noc MASTER_AMPSS_M0 &config_noc SLAVE_DISPLAY_CFG>,
>> - <&mmss_noc MASTER_MDP_PORT0 &mc_virt SLAVE_EBI_CH0>,
>> + interconnects = <&mmss_noc MASTER_MDP_PORT0 &mc_virt SLAVE_EBI_CH0>,
>> <&mmss_noc MASTER_MDP_PORT1 &mc_virt SLAVE_EBI_CH0>;
>> - interconnect-names = "notused", "mdp0-mem", "mdp1-mem";
>> + interconnect-names = "mdp0-mem", "mdp1-mem";
>>
>> power-domains = <&dispcc MDSS_GDSC>;
>>
>> @@ -2356,7 +2355,7 @@ mdss: mdss@...0000 {
>> ranges;
>>
>> mdss_mdp: mdp@...1000 {
>> - compatible = "qcom,sdm845-dpu";
>> + compatible = "qcom,sm8250-dpu";
>> reg = <0 0x0ae01000 0 0x8f000>,
>> <0 0x0aeb0000 0 0x2008>;
>> reg-names = "mdp", "vbif";
>> @@ -2580,36 +2579,21 @@ opp-358000000 {
>>
>> dispcc: clock-controller@...0000 {
>> compatible = "qcom,sm8250-dispcc";
>> - reg = <0 0x0af00000 0 0x20000>;
>> - mmcx-supply = <&mmcx_reg>;
>> + reg = <0 0x0af00000 0 0x10000>;
>> clocks = <&rpmhcc RPMH_CXO_CLK>,
>> <&dsi0_phy 0>,
>> <&dsi0_phy 1>,
>> <&dsi1_phy 0>,
>> <&dsi1_phy 1>,
>> - <0>,
>> - <0>,
>> - <0>,
>> - <0>,
>> - <0>,
>> - <0>,
>> - <0>,
>> - <0>,
>> - <&sleep_clk>;
>> + <&dp_phy 0>,
>> + <&dp_phy 1>;
>
> There is no dp_phy on sm8250 yet.
>
>> clock-names = "bi_tcxo",
>> "dsi0_phy_pll_out_byteclk",
>> "dsi0_phy_pll_out_dsiclk",
>> "dsi1_phy_pll_out_byteclk",
>> "dsi1_phy_pll_out_dsiclk",
>> - "dp_link_clk_divsel_ten",
>> - "dp_vco_divided_clk_src_mux",
>> - "dptx1_phy_pll_link_clk",
>> - "dptx1_phy_pll_vco_div_clk",
>> - "dptx2_phy_pll_link_clk",
>> - "dptx2_phy_pll_vco_div_clk",
>> - "edp_phy_pll_link_clk",
>> - "edp_phy_pll_vco_div_clk",
>> - "sleep_clk";
>> + "dp_phy_pll_link_clk",
>> + "dp_phy_pll_vco_div_clk";
>> #clock-cells = <1>;
>> #reset-cells = <1>;
>> #power-domain-cells = <1>;
>
>
>
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