linux-kernel - Re: [RFC 00/12] Misc patches for QCOM clocks

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Message-ID: <1232449b-9fb6-fbf6-25ff-953867546217@codeaurora.org>
Date:   Thu, 27 Jul 2017 11:39:48 -0700
From:   Stephen Boyd <sboyd@...eaurora.org>
To:     Abhishek Sahu <absahu@...eaurora.org>, mturquette@...libre.com
Cc:     andy.gross@...aro.org, david.brown@...aro.org,
        rnayak@...eaurora.org, linux-arm-msm@...r.kernel.org,
        linux-soc@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC 00/12] Misc patches for QCOM clocks

On 07/27/2017 04:10 AM, Abhishek Sahu wrote:
> This patch series does the miscellaneous changes in different
> types of Qualcomm clock nodes which are required for IPQ8074 SoC.
> Following are the major changes in IPQ8074 for which the existing
> code does not have support.
>
> 1. Some of the IPQ8074 RCG2 has CFG_RCGR at offset 8 from
>    CMD_RCGR instead of offset 4. Following are the register
>    offsets of UBI RCG2 in Qualcomm IPQ8074.
>
> 	GCC_NSS_UBI0_CMD_RCGR: 0x1868100
> 	GCC_NSS_UBI0_CFG_RCGR: 0x1868108

That's insane. There's a hardware design mandate to not mess with the
register layout specifically for this reason. Amazing, but not
surprising that someone screwed it up.

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