From mboxrd@z Thu Jan 1 00:00:00 1970 From: Schrempf Frieder Date: Mon, 22 Feb 2016 07:03:37 +0000 Subject: [U-Boot] Issue with USB mass storage (thumb drives) In-Reply-To: References: <56B08683.9000607@exceet.de> <56B309F3.9000503@exceet.de> <201602041228.53313.marex@denx.de> <56C5974E.10600@exceet.de> <56C5E3F5.4040906@denx.de> Message-ID: <56CAB2C8.8040703@exceet.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 18.02.2016 18:14, Fabio Estevam wrote: > On Thu, Feb 18, 2016 at 1:32 PM, Marek Vasut wrote: > >>> Also one of our customers tested a few non-working sticks with this >>> change and reported, that it fixed it for him. >>> Here's a list of those devices, but I guess there are a lot more: >>> >>> 1. Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash >>> Drive, VID: 0x090c, PID: 0x1000 >>> 2. Freecom Technologies, VID: 0x07ab, PID: 0xfcf1 >>> 3. Newron, VID: 0x8644, PID: 0x800e >>> 4. GEMBIRD PhotoFrame PF-15-1, VID: 0x1908, PID: 0x1320 >>> >> Maybe we need a quirk table then ? > It seems the list of affected devices is unknown. > > What would be the impact of changing USB_MAX_XFER_BLK from 65535 to 32767? > > Would this impact the USB transfer rate? Frieder, do you know? I don't really know. While testing I had the feeling, that the transfer is slightly slower, but I can't tell for sure.