From: Alexander Stein <alexander.stein@systec-electronic.com>
To: linux-kernel@vger.kernel.org
Cc: Mark Brown <broonie@kernel.org>
Subject: Re: regmap: mmio: regression in pre-v4.6-rc1
Date: Wed, 23 Mar 2016 10:43:08 +0100 [thread overview]
Message-ID: <2546674.kDegJfs12v@ws-stein> (raw)
In-Reply-To: <1981840.HVGTg07J9M@ws-stein>
On Wednesday 23 March 2016 09:48:42, Alexander Stein wrote:
> I'm currently trying to get PCIe working on LS1021A (little-endian ARM). For link-detection I need access to a syscon perpheral (SCFG) which is attched to CPU as big-endian.
> The corresponding DT part is:
>
> scfg: scfg@1570000 {
> compatible = "fsl,ls1021a-scfg", "syscon";
> reg = <0x0 0x1570000 0x0 0x10000>;
> big-endian;
> };
>
> Based on current linus's master (a24e3d414e59ac765, "Merge branch 'akpm' (patches from Andrew)") I noticed the access is actually done as little-endian.
> I could track it down to commit 922a9f936e40001f ("regmap: mmio: Convert to regmap_bus and fix accessor usage"). Reverting it, the access is fine now and I get my PCIe link.
Just for the records, this also affects spi-fsl-dspi which is also attached in big-endian.
Best regards,
Alexander
next prev parent reply other threads:[~2016-03-23 9:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-23 8:48 regmap: mmio: regression in pre-v4.6-rc1 Alexander Stein
2016-03-23 9:43 ` Alexander Stein [this message]
2016-03-23 10:34 ` Mark Brown
2016-03-23 11:16 ` Alexander Stein
2016-03-23 11:39 ` Mark Brown
2016-03-23 11:50 ` Alexander Stein
2016-03-23 12:05 ` Mark Brown
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