From mboxrd@z Thu Jan 1 00:00:00 1970 From: khilman@kernel.org (Kevin Hilman) Date: Tue, 1 Sep 2015 17:28:03 -0700 Subject: [PATCH v3 4/5] clk: Hi6220: add stub clock driver In-Reply-To: <1438564418-15948-5-git-send-email-leo.yan@linaro.org> References: <1438564418-15948-1-git-send-email-leo.yan@linaro.org> <1438564418-15948-5-git-send-email-leo.yan@linaro.org> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Sun, Aug 2, 2015 at 6:13 PM, Leo Yan wrote: > On Hi6220, there have some clocks which can use mailbox channel to send > messages to power controller to change frequency; this includes CPU, GPU > and DDR clocks. > > For dynamic frequency scaling, firstly need write the frequency value to > SRAM region, and then send message to mailbox to trigger power controller > to handle this requirement. This driver will use syscon APIs to pass SRAM > memory region and use common mailbox APIs for channels accessing. > > This init driver will support cpu frequency change firstly. > > Signed-off-by: Leo Yan The kernelci.org build/boot bot detected boot failures in linux-next[1], and the failure was bisected down to this patch (landed in linux-next as commit c1628a2c416da947f5afac615d53189250fa49cb. I verifed that reverting this commit on top of next-20150901 gets the hikey booting again. Kevin [1] http://kernelci.org/boot/hi6220-hikey/