Re: [PATCH v3] arm64: dts: imx8mp: Add DT nodes for the two ISPs

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On Tue, Aug 13, 2024 at 6:40 PM Laurent Pinchart
<laurent.pinchart@xxxxxxxxxxxxxxxx> wrote:
>
> From: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>
>
> The ISP supports both CSI and parallel interfaces, where port 0
> corresponds to the former and port 1 corresponds to the latter. Since
> the i.MX8MP's ISPs are connected by the parallel interface to the CSI
> receiver, set them both to port 1.
>
> Signed-off-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Tested-by: Adam Ford <aford173@xxxxxxxxx> # imx8mp-beacon
> ---
> Changes since v2:
>
> - Assign clock parent and frequency in blk-ctrl
>
> Changes since v1:
>
> - Fix clock ordering
> - Add #address-cells and #size-cells to ports nodes
> ---
>  arch/arm64/boot/dts/freescale/imx8mp.dtsi | 51 ++++++++++++++++++++++-
>  1 file changed, 49 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> index d9b5c40f6460..09f1e27ee220 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> @@ -1673,6 +1673,50 @@ isi_in_1: endpoint {
>                                 };
>                         };
>
> +                       isp_0: isp@32e10000 {
> +                               compatible = "fsl,imx8mp-isp";
> +                               reg = <0x32e10000 0x10000>;
> +                               interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
> +                               clocks = <&clk IMX8MP_CLK_MEDIA_ISP_ROOT>,
> +                                        <&clk IMX8MP_CLK_MEDIA_AXI_ROOT>,
> +                                        <&clk IMX8MP_CLK_MEDIA_APB_ROOT>;
> +                               clock-names = "isp", "aclk", "hclk";
> +                               power-domains = <&media_blk_ctrl IMX8MP_MEDIABLK_PD_ISP>;
> +                               fsl,blk-ctrl = <&media_blk_ctrl 0>;
> +                               status = "disabled";
> +
> +                               ports {
> +                                       #address-cells = <1>;
> +                                       #size-cells = <0>;
> +
> +                                       port@1 {
> +                                               reg = <1>;
> +                                       };
> +                               };
> +                       };
> +
> +                       isp_1: isp@32e20000 {
> +                               compatible = "fsl,imx8mp-isp";
> +                               reg = <0x32e20000 0x10000>;
> +                               interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>;
> +                               clocks = <&clk IMX8MP_CLK_MEDIA_ISP_ROOT>,
> +                                        <&clk IMX8MP_CLK_MEDIA_AXI_ROOT>,
> +                                        <&clk IMX8MP_CLK_MEDIA_APB_ROOT>;
> +                               clock-names = "isp", "aclk", "hclk";
> +                               power-domains = <&media_blk_ctrl IMX8MP_MEDIABLK_PD_ISP>;
> +                               fsl,blk-ctrl = <&media_blk_ctrl 1>;
> +                               status = "disabled";
> +
> +                               ports {
> +                                       #address-cells = <1>;
> +                                       #size-cells = <0>;
> +
> +                                       port@1 {
> +                                               reg = <1>;
> +                                       };
> +                               };
> +                       };
> +
>                         dewarp: dwe@32e30000 {
>                                 compatible = "nxp,imx8mp-dw100";
>                                 reg = <0x32e30000 0x10000>;
> @@ -1873,13 +1917,16 @@ media_blk_ctrl: blk-ctrl@32ec0000 {
>                                                   <&clk IMX8MP_CLK_MEDIA_APB>,
>                                                   <&clk IMX8MP_CLK_MEDIA_DISP1_PIX>,
>                                                   <&clk IMX8MP_CLK_MEDIA_DISP2_PIX>,
> +                                                 <&clk IMX8MP_CLK_MEDIA_ISP>,
>                                                   <&clk IMX8MP_VIDEO_PLL1>;
>                                 assigned-clock-parents = <&clk IMX8MP_SYS_PLL2_1000M>,
>                                                          <&clk IMX8MP_SYS_PLL1_800M>,
>                                                          <&clk IMX8MP_VIDEO_PLL1_OUT>,
> -                                                        <&clk IMX8MP_VIDEO_PLL1_OUT>;
> +                                                        <&clk IMX8MP_VIDEO_PLL1_OUT>,
> +                                                        <&clk IMX8MP_SYS_PLL2_500M>;
>                                 assigned-clock-rates = <500000000>, <200000000>,
> -                                                      <0>, <0>, <1039500000>;
> +                                                      <0>, <0>, <0>, <500000000>,

Is the insertion of the extra <0> here correct?  You inserted one
clock above for IMX8MP_CLK_MEDIA_ISP, but it appears you inserted two
here.
I think this might break the IMX8MP_VIDEO_PLL1 rate and not set the
IMX8MP_CLK_MEDIA_ISP as expected.

Am I missing something?

adam

> +                                                      <1039500000>;
>                                 #power-domain-cells = <1>;
>
>                                 lvds_bridge: bridge@5c {
>
> base-commit: 7c626ce4bae1ac14f60076d00eafe71af30450ba
> --
> Regards,
>
> Laurent Pinchart
>





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