linux-kernel - Re: [PATCH v2 91/91] ARM: dts: bcm2711: Enable the display pipeline

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Date:   Sat, 25 Apr 2020 22:54:22 +0200
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Maxime Ripard <maxime@...no.tech>,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Eric Anholt <eric@...olt.net>
Cc:     Tim Gover <tim.gover@...pberrypi.com>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        Phil Elwell <phil@...pberrypi.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 91/91] ARM: dts: bcm2711: Enable the display pipeline

Hi Maxime,

Am 24.04.20 um 17:35 schrieb Maxime Ripard:
> Now that all the drivers have been adjusted for it, let's bring in the
> necessary device tree changes.
>
> Signed-off-by: Maxime Ripard <maxime@...no.tech>
> ---
>  arch/arm/boot/dts/bcm2711-rpi-4-b.dts |  46 +++++++++++-
>  arch/arm/boot/dts/bcm2711.dtsi        | 115 ++++++++++++++++++++++++++-
>  2 files changed, 160 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
> index 3205d2dfa898..0efbc4412dc9 100644
> --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
> +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
> @@ -220,3 +220,49 @@
>  &vchiq {
>  	interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
>  };
> +
> +&vc4 {
> +	status = "okay";
> +};
> +
> +&pixelvalve0 {
> +	status = "okay";
> +};
> +
> +&pixelvalve1 {
> +	status = "okay";
> +};
> +
> +&pixelvalve2 {
> +	status = "okay";
> +};
> +
> +&pixelvalve3 {
> +	status = "okay";
> +};
> +
> +&pixelvalve4 {
> +	status = "okay";
> +};
> +
> +&hdmi0 {
> +	clocks = <&firmware_clocks 13>, <&dvp 0>;
> +	status = "okay";
> +};
> +
> +&ddc0 {
> +	status = "okay";
> +};
> +
> +&hdmi1 {
> +	clocks = <&firmware_clocks 13>, <&dvp 1>;
> +	status = "okay";
> +};
> +
> +&ddc1 {
> +	status = "okay";
> +};
> +
> +&hvs {
> +	clocks = <&firmware_clocks 4>;
> +};
> diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
> index 00bcaed1be32..a6549fa6e62b 100644
> --- a/arch/arm/boot/dts/bcm2711.dtsi
> +++ b/arch/arm/boot/dts/bcm2711.dtsi
> @@ -12,6 +12,11 @@
>  
>  	interrupt-parent = <&gicv2>;
>  
...
> +
> +		ddc0: i2c@...04500 {
> +			compatible = "brcm,bcm2711-hdmi-i2c";
> +			reg = <0x7ef04500 0x100>, <0x7ef00b00 0x300>;
> +			reg-names = "bsc", "auto-i2c";
> +			clock-frequency = <390000>;

according to a patch [1] from Dave Stevenson the i2c clock frequencies
are too high.

[1] -
https://github.com/raspberrypi/linux/pull/3515/commits/c09f108de27e8bd1995e7713c6128fa79e69579a