Le 26/03/2021 à 15:24, Philipp Zabel a écrit :

On Thu, Mar 18, 2021 at 09:20:46AM +0100, Benjamin Gaignard wrote:

quoted

Split VPU node in two: one for G1 and one for G2 since they are
different hardware blocks.
Add syscon for hardware control block.
Remove reg-names property that is useless.
Each VPU node only need one interrupt.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
version 5:
  - use syscon instead of VPU reset

  arch/arm64/boot/dts/freescale/imx8mq.dtsi | 43 ++++++++++++++++++-----
  1 file changed, 34 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index 17c449e12c2e..b537d153ebbd 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi

@@ -1329,15 +1329,16 @@ usb3_phy1: usb-phy@382f0040 {
  			status = "disabled";
  		};
  
-		vpu: video-codec@38300000 {
+		vpu_ctrl: syscon@38320000 {
+			compatible = "nxp,imx8mq-vpu-ctrl", "syscon";
+			reg = <0x38320000 0x10000>;
+		};
+
+		vpu_g1: video-codec@38300000 {
  			compatible = "nxp,imx8mq-vpu";
-			reg = <0x38300000 0x10000>,
-			      <0x38310000 0x10000>,
-			      <0x38320000 0x10000>;
-			reg-names = "g1", "g2", "ctrl";
-			interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
-				     <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
-			interrupt-names = "g1", "g2";
+			reg = <0x38300000 0x10000>;
+			interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "g1";
  			clocks = <&clk IMX8MQ_CLK_VPU_G1_ROOT>,
  				 <&clk IMX8MQ_CLK_VPU_G2_ROOT>,
  				 <&clk IMX8MQ_CLK_VPU_DEC_ROOT>;

@@ -1350,9 +1351,33 @@ vpu: video-codec@38300000 {
  						 <&clk IMX8MQ_VPU_PLL_OUT>,
  						 <&clk IMX8MQ_SYS1_PLL_800M>,
  						 <&clk IMX8MQ_VPU_PLL>;
-			assigned-clock-rates = <600000000>, <600000000>,
+			assigned-clock-rates = <600000000>, <300000000>,

I'd like to see this mentioned in the commit message.

Yes I would do that.
The value comes from the datasheet.

quoted

+					       <800000000>, <0>;
+			power-domains = <&pgc_vpu>;
+			nxp,imx8mq-vpu-ctrl = <&vpu_ctrl>;
+		};
+
+		vpu_g2: video-codec@38310000 {
+			compatible = "nxp,imx8mq-vpu-g2";
+			reg = <0x38310000 0x10000>;
+			interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "g2";
+			clocks = <&clk IMX8MQ_CLK_VPU_G1_ROOT>,
+				 <&clk IMX8MQ_CLK_VPU_G2_ROOT>,
+				 <&clk IMX8MQ_CLK_VPU_DEC_ROOT>;
+			clock-names = "g1", "g2",  "bus";
+			assigned-clocks = <&clk IMX8MQ_CLK_VPU_G1>,

Can the G1 clock configuration be dropped from the G2 device node and
the G2 clock configuration from the G1 device node? It looks weird that
these devices configure each other's clocks.

No because if only one device node is enabled we need to configure the both
clocks anyway.

Benjamin

regards
Philipp

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel