On Sat, Aug 17, 2024 at 1:26 PM Laurent Pinchart
<laurent.pinchart@xxxxxxxxxxxxxxxx> wrote:
>
> Hi Alexander,
>
> On Thu, Aug 15, 2024 at 02:05:39PM +0200, Alexander Stein wrote:
> > Am Mittwoch, 14. August 2024, 18:14:51 CEST schrieb Laurent Pinchart:
> > > 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>
> > > ---
> > > Changes since v3:
> > >
> > > - Add comment regarding the IMX8MP_CLK_MEDIA_ISP clock rate
> > > - Fix assigned-clock-rates
> > > - Dropping Tested-by as the clock configuration has changed
> > >
> > > 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 | 57 ++++++++++++++++++++++-
> > > 1 file changed, 55 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > > index d9b5c40f6460..f3531cfb0d79 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>;
> > > @@ -1869,17 +1913,26 @@ media_blk_ctrl: blk-ctrl@32ec0000 {
> > > clock-names = "apb", "axi", "cam1", "cam2",
> > > "disp1", "disp2", "isp", "phy";
> > >
> > > + /*
> > > + * The ISP maximum frequency is 400MHz in normal mode
> > > + * and 500MHz in overdrive mode. The 400MHz operating
> > > + * point hasn't been successfully tested yet, so set
> > > + * IMX8MP_CLK_MEDIA_ISP to 500MHz for the time being.
> > > + */
> > > assigned-clocks = <&clk IMX8MP_CLK_MEDIA_AXI>,
> > > <&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>, <500000000>,
> > > + <1039500000>;
> >
> > Unfortunately for some reason this reparenting doesn't work (on my platform).
> > 'media_isp' is still below IMX8MP_CLK_24M.
> > $ grep -B1 media_isp /sys/kernel/debug/clk/clk_summary
> > mipi_dsi_esc_rx 0 0 0 24000000 0 0 50000 N deviceless no_connection_id
> > media_isp 0 0 0 24000000 0 0 50000 N deviceless no_connection_id
> > media_isp_root_clk 0 0 0 24000000 0 0 50000 N 32e10000.isp isp
>
> Hmmm... I get
>
> sys_pll2_500m 3 3 0 500000000 0 0 50000 Y deviceless no_connection_id
> media_isp 0 0 0 500000000 0 0 50000 N deviceless no_connection_id
> media_isp_root_clk 0 0 0 500000000 0 0 50000 N 32e10000.isp isp
>
> > I have to add this diff for isp_0 (and isp_1 if you use it):
> > --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > @@ -1683,6 +1683,9 @@ isp_0: isp@32e10000 {
> > clock-names = "isp", "aclk", "hclk";
> > power-domains = <&media_blk_ctrl IMX8MP_MEDIABLK_PD_ISP>;
> > fsl,blk-ctrl = <&media_blk_ctrl 0>;
> > + assigned-clocks = <&clk IMX8MP_CLK_MEDIA_ISP>;
> > + assigned-clock-parents = <&clk IMX8MP_SYS_PLL2_500M>;
> > + assigned-clock-rates = <500000000>;
> > status = "disabled";
> >
> > ports {
> >
> > Now clock is setup properly:
> > $ grep -B1 media_isp /sys/kernel/debug/clk/clk_summary
> > sys_pll2_500m 3 3 0 500000000 0 0 50000 Y deviceless no_connection_id
> > media_isp 0 0 0 500000000 0 0 50000 N deviceless no_connection_id
> > media_isp_root_clk 0 0 0 500000000 0 0 50000 N 32e10000.isp isp
>
> I'm not sure why that's the case, I don't have assigned-clock*
> properties in the ISP nodes in my device tree and things still work
> properly. Would you be able to investigate ?
For what it's worth, when I remove the extra <0> clock reference on my
board like:
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -1927,7 +1927,7 @@ media_blk_ctrl: blk-ctrl@32ec0000 {
<&clk
IMX8MP_VIDEO_PLL1_OUT>,
<&clk
IMX8MP_SYS_PLL2_500M>;
assigned-clock-rates = <500000000>, <200000000>,
- <0>, <0>, <0>,
<500000000>,
+ <0>, <0>, <500000000>,
<1039500000>;
#power-domain-cells = <1>;
I am able to get:
sys_pll2_500m 1 1 0
500000000 0 0 50000 Y deviceless
no_connection_id
media_isp 0 0 0
500000000 0 0 50000 N
deviceless no_connection_id
media_isp_root_clk 0 0 0
500000000 0 0 50000 N
32e10000.isp isp
The video pll is also set to 1039500000
adam
>
> > > #power-domain-cells = <1>;
> > >
> > > lvds_bridge: bridge@5c {
> > >
> > > base-commit: 7c626ce4bae1ac14f60076d00eafe71af30450ba
> > > prerequisite-patch-id: ad2bbccf3b0f27415fb14851cec52c431ccb354f
>
> --
> Regards,
>
> Laurent Pinchart
