From: Paul Walmsley Date: Thu, 19 Apr 2012 06:49:09 +0000 (-0600) Subject: ARM: OMAP2+: hwmod: revise the IP block reset process X-Git-Tag: omap-cleanup-hwmod-for-v3.5^2~26 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=30e105c000abbac55602b37f4831437bca5487b0;p=pandora-kernel.git ARM: OMAP2+: hwmod: revise the IP block reset process Revise the IP block reset process. This patch ensures that the OCP_SYSCONFIG registers are reloaded after a custom reset. Since OCP_SYSCONFIG bits are cleared during reset, they should be reprogrammed unless the IP block is being left in reset. (The only IP blocks that are left in reset are IP blocks with hardreset lines and no custom reset function.) If the IP block is left in reset, then it is inaccessible to the MPU, and an access to the OCP_SYSCONFIG register will cause an abort. This version incorporates comments from Omar Ramirez Luna to skip the OCP_SYSCONFIG access after asserting hardreset lines. This allows the MMU (IOMMU) IP block, which has both hardreset lines and an OCP_SYSCONFIG register. Also, ignore _ocp_softreset() errors if the IP block doesn't include a softreset bit. This is needed since a subsequent patch will start taking the return value of the _reset() function seriously. Signed-off-by: Paul Walmsley Cc: Benoît Cousson Cc: Omar Ramirez Luna --- Reading git-diff-tree failed