linux-kernel - Re: [PATCH 00/10] AM64x Disable Incomplete DT Nodes

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Date:   Tue, 18 Oct 2022 10:24:11 -0500
From:   Bryan Brattlof <bb@...com>
To:     Andrew Davis <afd@...com>
CC:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 00/10] AM64x Disable Incomplete DT Nodes

On October 17, 2022 thus sayeth Andrew Davis:
> Hello all,
> 
> This series goes through the AM64x dtsi and disables the set of nodes
> that are not functional without additional board level information.
> This is usually pinmux data, but can also be inernal device resources.
> 
> Only when the node is completed in the board file should the node be
> enabled. This helps prevents nodes that represent IP that are not
> pinned-out on a given board from being left enabled.
> 
> This also reduces the effort needed to add a new board, one no longer
> needs to manually disable all the extra IP. For instance TI J784s4 has
> 20(!) MCAN instances. It is much easier to enable the one you pin out,
> vs disabling the 19 that you did not.
> 
> Thanks,
> Andrew
> 
> Andrew Davis (10):
>   arm64: dts: ti: k3-am64: Enable UART nodes at the board level
>   arm64: dts: ti: k3-am64: Enable I2C nodes at the board level
>   arm64: dts: ti: k3-am64: Enable SPI nodes at the board level
>   arm64: dts: ti: k3-am64: Enable EPWM nodes at the board level
>   arm64: dts: ti: k3-am64: Enable ECAP nodes at the board level
>   arm64: dts: ti: k3-am64: Enable PCIe nodes at the board level
>   arm64: dts: ti: k3-am64: MDIO pinmux should belong to the MDIO node
>   arm64: dts: ti: k3-am64: Enable MDIO nodes at the board level
>   arm64: dts: ti: k3-am64: Enable MCAN nodes at the board level
>   arm64: dts: ti: k3-am64: Enable GPMC and ELM nodes at the board level
> 
>  arch/arm64/boot/dts/ti/k3-am64-main.dtsi |  37 ++++++
>  arch/arm64/boot/dts/ti/k3-am64-mcu.dtsi  |   6 +
>  arch/arm64/boot/dts/ti/k3-am642-evm.dts  | 119 ++-----------------
>  arch/arm64/boot/dts/ti/k3-am642-sk.dts   | 142 ++---------------------
>  4 files changed, 63 insertions(+), 241 deletions(-)
> 

Reviewed-by: Bryan Brattlof <bb@...com>

I wholeheartedly agree! This looks great to me!

~Bryan