[RFC PATCH 2/3] mmc: omap_hsmmc: add tuning support
From: Felipe Balbi <hidden>
Date: 2014-11-14 17:42:01
Also in:
linux-devicetree, linux-mmc, linux-omap, lkml
Hi, On Thu, Nov 13, 2014 at 06:26:18PM +0530, Kishon Vijay Abraham I wrote:
quoted hunk ↗ jump to hunk
@@ -233,6 +263,48 @@ struct omap_mmc_of_data { u8 controller_flags; }; +static const u32 ref_tuning_4bits[] = { + 0x00FF0FFF, 0xCCC3CCFF, 0xFFCC3CC3, 0xEFFEFFFE, + 0xDDFFDFFF, 0xFBFFFBFF, 0xFF7FFFBF, 0xEFBDF777, + 0xF0FFF0FF, 0x3CCCFC0F, 0xCFCC33CC, 0xEEFFEFFF, + 0xFDFFFDFF, 0xFFBFFFDF, 0xFFF7FFBB, 0xDE7B7FF7 +}; + +static const u32 ref_tuning_8bits[] = { + 0xFF00FFFF, 0x0000FFFF, 0xCCCCFFFF, 0xCCCC33CC, + 0xCC3333CC, 0xFFFFCCCC, 0xFFFFEEFF, 0xFFEEEEFF, + 0xFFDDFFFF, 0xDDDDFFFF, 0xBBFFFFFF, 0xBBFFFFFF, + 0xFFFFFFBB, 0XFFFFFF77, 0x77FF7777, 0xFFEEDDBB, + 0x00FFFFFF, 0x00FFFFFF, 0xCCFFFF00, 0xCC33CCCC, + 0x3333CCCC, 0xFFCCCCCC, 0xFFEEFFFF, 0xEEEEFFFF, + 0xDDFFFFFF, 0xDDFFFFFF, 0xFFFFFFDD, 0XFFFFFFBB, + 0xFFFFBBBB, 0xFFFF77FF, 0xFF7777FF, 0xEEDDBB77 +};
yet another feature we would've gotten for free if we were already using sdhci. This is just a copy of what's on sdhci-msm.c, probably because they license the same IP we do. It would be much better to just convert omap-hsmmc.c into sdhci-omap.c much like it was done for 8250-omap.c, with the added benefit that this will incur no userland regressions due to devnode names. -- balbi -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20141114/fbafeeea/attachment.sig>