drm/msm/dsi: hs_zero timing

[Werner Johansson]

On Mon, Aug 24, 2015 at 7:32 AM, Hai Li <hali at codeaurora.org> wrote:
> Hi Werner,
>
> Yes, the register is to adjust hs_zero.
> Could you share the panel's video timing and dphy timings (or the panel DT), used by downstream driver?
>
> The dphy timing calculations in the phy driver are from the excel sheet as well, I can check if there is any issue inside the calculation code making the difference.
>
>
> Thanks,
> Hai

Hi Hai,

Yes definitely, our downstream DT definitions for the Panasonic panel
looks like this: (taken from our kernel available here:
https://github.com/sonyxperiadev/kernel-copyleft/blob/23.1.A.1.xxx/arch/arm/boot/dts/dsi-panel-castor.dtsi#L78-L145)

dsi_novatek_panasonic_wuxga_vid: somc,novatek_panasonic_wuxga_panel {
qcom,mdss-dsi-panel-name = "panasonic novatek wuxga video";
qcom,mdss-dsi-panel-controller = <&mdss_dsi0>;
qcom,mdss-dsi-panel-type = "dsi_video_mode";
qcom,mdss-dsi-panel-destination = "display_1";
qcom,mdss-dsi-panel-framerate = <60>;
qcom,mdss-dsi-virtual-channel-id = <0>;
qcom,mdss-dsi-stream = <0>;
qcom,mdss-dsi-panel-width = <1920>;
qcom,mdss-dsi-panel-height = <1200>;
qcom,mdss-dsi-h-front-porch = <152>;
qcom,mdss-dsi-h-back-porch = <20>;
qcom,mdss-dsi-h-pulse-width = <52>;
qcom,mdss-dsi-h-sync-skew = <0>;
qcom,mdss-dsi-v-back-porch = <48>;
qcom,mdss-dsi-v-front-porch = <24>;
qcom,mdss-dsi-v-pulse-width = <6>;
qcom,mdss-dsi-h-left-border = <0>;
qcom,mdss-dsi-h-right-border = <0>;
qcom,mdss-dsi-v-top-border = <0>;
qcom,mdss-dsi-v-bottom-border = <0>;
qcom,mdss-dsi-bpp = <24>;
qcom,mdss-dsi-underflow-color = <0x0>;
qcom,mdss-dsi-border-color = <0>;
qcom,mdss-dsi-on-command = [32 01 00 00 00 00 02 00 00];
qcom,mdss-dsi-on-command-state = "dsi_lp_mode";
qcom,mdss-dsi-h-sync-pulse = <1>;
qcom,mdss-dsi-traffic-mode = "non_burst_sync_event";
qcom,mdss-dsi-bllp-eof-power-mode;
qcom,mdss-dsi-bllp-power-mode;
qcom,mdss-dsi-lane-0-state;
qcom,mdss-dsi-lane-1-state;
qcom,mdss-dsi-lane-2-state;
qcom,mdss-dsi-lane-3-state;
qcom,mdss-dsi-panel-timings = [FB 3E 2A 00 70 74 2E 42 33 03 04 00];
qcom,mdss-dsi-t-clk-post = <0x02>;
qcom,mdss-dsi-t-clk-pre = <0x2E>;
qcom,mdss-dsi-bl-min-level = <1>;
qcom,mdss-dsi-bl-max-level = <255>;
qcom,mdss-brightness-max-level = <255>;
qcom,mdss-dsi-dma-trigger = "trigger_sw";
qcom,mdss-dsi-mdp-trigger = "none";
qcom,mdss-dsi-bl-pmic-control-type = "bl_ctrl_wled";
qcom,mdss-dsi-pan-enable-dynamic-fps;
qcom,mdss-dsi-pan-fps-update = "dfps_suspend_resume_mode";
qcom,cont-splash-enabled;
qcom,mdss-dsi-tx-eot-append;
somc,driver-ic = <3>;
somc,dric-gpio = <&msmgpio 26 0>;
somc,mul-channel-scaling = <3>;
somc,mdss-phy-size-mm = <217 135>;
somc,mdss-dsi-lane-config = [00 c2 ef 00 00 00 00 01 ff
00 c2 ef 00 00 00 00 01 ff
00 c2 ef 00 00 00 00 01 ff
00 c2 ef 00 00 00 00 01 ff
00 02 00 00 00 00 00 01 97];
somc,lcd-id = <1>;
somc,lcd-id-adc = <801000 917000>;
somc,disp-en-on-post = <251>;
somc,disp-en-off-pre = <86>;
somc,pw-down-period = <500>;
somc,mdss-dsi-uv-param-type = <0>;
somc,mdss-dsi-pcc-table-size = <1>;
somc,mdss-dsi-pcc-table = <
0x00 0x01 0x1C 0x1F 0x1C 0x1F 0x8000 0x8000 0x7D80>;
};

/wj