From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfram Sang Subject: Re: [RFT] arm64: dts: renesas: salvator-common: enable SDR104 for SD cards Date: Tue, 8 Aug 2017 20:54:45 +0200 Message-ID: <20170808185445.GA2170@katana> References: <20170802201311.1394-1-wsa+renesas@sang-engineering.com> <20170803074351.GC19671@verge.net.au> <20170803155357.GA3826@verge.net.au> <20170803155520.GB3826@verge.net.au> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Dxnq1zWXvFF0Q93v" Return-path: Received: from www.zeus03.de ([194.117.254.33]:58386 "EHLO mail.zeus03.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752295AbdHHSyr (ORCPT ); Tue, 8 Aug 2017 14:54:47 -0400 Content-Disposition: inline In-Reply-To: <20170803155520.GB3826@verge.net.au> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Simon Horman Cc: Wolfram Sang , linux-renesas-soc@vger.kernel.org, linux-mmc@vger.kernel.org --Dxnq1zWXvFF0Q93v Content-Type: text/plain; charset=us-ascii Content-Disposition: inline > As it is an "RFT" I'm happy to apply it if you repost > it or otherwise indicate that is what you would like to happen. As discussed in a chat, I tried SDR104 with my SDIO WiFi cards: H3: - one slot worked flawlessly - one slot could load FW but failed to read status (with SDR50: both slots work) M3-W: - both slots could not load the firmware (with SDR50: one slot works, one fails to load FW) The cards, however, were correctly identified as SDR104 and there were no tuning errors and no other SDHI related warnings. Changing TDSEL in the PFC did not change anything. The manual of the WiFi card (u-blox EMMY-W1) mentions a maximum line length of 100mm. Measuring a direct line from the SoC to the slots, I'd think we are very much on the edge of that. And given the length of the SDIO adapter, we are surely exceeding that :( Maybe we should do more tests with more boards? On the other hand, it seems the WiFi card is running out of the specs. So much for now. I'll sleep over it and try to get more data tomorrow. Regards, Wolfram --Dxnq1zWXvFF0Q93v Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAlmKCPAACgkQFA3kzBSg KbZ/YhAAtAb8x24atSDy3O3RlAqNRqJ7SJhXTxB3aF0KfwWcUQsyVpcUKRpBltNB 5PboVOwsTjH7y3gIcf5Ed3WUHHqWqPqlQMP2rmNYWN/B6ryAmXv1DIq9ZOo2bDB0 d0IInhgoFQibsFott+nV0jpFX+TrCFa8ehLV98M4mZFaKdpJjMVLsza2ey1EyaBT 5E8waEMjq+Q9n0jwLiyubesEFKP82rQ2tl6UKepooqrMc23Zg3wYtPmqHuXMQLHe +6RPhlwjSRcu1mvbOaQKAD4mDXX1K+7RDwSwQPpZxkpKHLPH8fv8ND4xMb5oJCu0 CbBVtL42hTm4AIPyRzNT4LMqnyJTfMv0QZtkzyeFQIZGJJYutFHtbnQTheT9m7Lc IjvZIl7mQeNbmWNyIn5xQBAFbIyIJ7AN20GTsNYb4dlntU42n/+5Nqn+/YY6kIps jjxkczvTlKBPQG8Ii+8tKNcoUMmqGhu/czadsT6OgaO7EaPd/Tk4yjRzIdRKNkBM VesldVUsVKt6kKxHCFfxyanfO8n7T7kwS+87GYTlr5gz/LWsVMkD/x7AyhubMQjM 4EUW46ZbCgUyStUDTIEA3KanutCbOjh4bZITyC2VaqaQGmgyukRqeT26tMBalr/3 BXyrKD1Jw2nGuW/dukZ7HXmKaHxykzBL3qzSrz4zPLSNmm+yCAI= =BTMy -----END PGP SIGNATURE----- --Dxnq1zWXvFF0Q93v--