From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Roese Date: Wed, 13 Jul 2016 08:20:36 +0200 Subject: [U-Boot] xHCI on x86 Message-ID: <5785DDB4.80102@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi! I'm currently trying to get xHCI working on some BayTrail based x86 boards. For this I've added DM support to xhci-pci and made a small change to cache.h to enable compilation of the xhci driver on x86 (please find those 2 patches attached - I'll send then to the list once this is resolved). But I noticed that the xhci driver hangs in xhci_queue_command() in this line: xhci_writel(&ctrl->dba->doorbell[0], DB_VALUE_HOST); when first writing to the doorbell register. Reading from this doorbell register still works just fine. IIRC, Simon has mentioned that xHCI still has some "issues" on x86. Simon, is this what you have seen as well? Does anyone have some ideas how to solve this? Thanks, Stefan -------------- next part -------------- A non-text attachment was scrubbed... Name: 0001-x86-cache.h-Add-default-for-CONFIG_SYS_CACHELINE_SIZ.patch Type: text/x-diff Size: 1163 bytes Desc: not available URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 0001-WIP-usb-xhci-pci-Add-DM-support.patch Type: text/x-diff Size: 2631 bytes Desc: not available URL: