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Groups > linux.kernel > #1363274
| From | Alexander Stein <alexander.stein@systec-electronic.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: regmap: mmio: regression in pre-v4.6-rc1 |
| Date | 2016-03-23 10:50 +0100 |
| Message-ID | <rfNAm-1qP-9@gated-at.bofh.it> (permalink) |
| References | <rfMEi-Or-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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
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regmap: mmio: regression in pre-v4.6-rc1 Alexander Stein <alexander.stein@systec-electronic.com> - 2016-03-23 09:50 +0100
Re: regmap: mmio: regression in pre-v4.6-rc1 Alexander Stein <alexander.stein@systec-electronic.com> - 2016-03-23 10:50 +0100
Re: regmap: mmio: regression in pre-v4.6-rc1 Mark Brown <broonie@kernel.org> - 2016-03-23 11:40 +0100
Re: regmap: mmio: regression in pre-v4.6-rc1 Alexander Stein <alexander.stein@systec-electronic.com> - 2016-03-23 12:20 +0100
Re: regmap: mmio: regression in pre-v4.6-rc1 Mark Brown <broonie@kernel.org> - 2016-03-23 12:40 +0100
Re: regmap: mmio: regression in pre-v4.6-rc1 Alexander Stein <alexander.stein@systec-electronic.com> - 2016-03-23 13:00 +0100
Re: regmap: mmio: regression in pre-v4.6-rc1 Mark Brown <broonie@kernel.org> - 2016-03-23 13:10 +0100
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