linux-kernel - Re: [PATCH 05/13] clk: qcom: apcs-msm8916: get parent clock names from DT

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Date:   Mon, 17 Dec 2018 15:37:43 -0800
From:   Stephen Boyd <sboyd@...nel.org>
To:     andy.gross@...aro.org, david.brown@...aro.org,
        jassisinghbrar@...il.com, jorge.ramirez-ortiz@...aro.org,
        mark.rutland@....com, mturquette@...libre.com, robh+dt@...nel.org,
        will.deacon@....com
Cc:     bjorn.andersson@...aro.org, vkoul@...nel.org,
        niklas.cassel@...aro.org, sibis@...eaurora.org,
        georgi.djakov@...aro.org, arnd@...db.de,
        horms+renesas@...ge.net.au, heiko@...ech.de,
        enric.balletbo@...labora.com, jagan@...rulasolutions.com,
        olof@...om.net, amit.kucheria@...aro.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH 05/13] clk: qcom: apcs-msm8916: get parent clock names from DT

Quoting Jorge Ramirez-Ortiz (2018-12-17 01:46:22)
> Allow accessing the parent clock names required for the driver
> operation by using the device tree node.
> 
> This permits extending the driver to other platforms without having to
> modify its source code.
> 
> For backwards compatibility leave previous values as default.

Why do we need to maintain backwards compatibility? Isn't is required
that the nodes have clocks properties?