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authordillon min <dillon.minfei@gmail.com>2020-07-14 09:35:07 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-07-22 10:33:03 +0300
commitcc3188b3bab25391eb345dfd5f2b3e8715bef93c (patch)
tree9c47e754ca6fd5a65c6304e769a4240886ea1883 /arch/arm/mach-shmobile/emev2.h
parent408ef501b894e94581c62e4d9aea18589786ddbb (diff)
downloadlinux-cc3188b3bab25391eb345dfd5f2b3e8715bef93c.tar.xz
ARM: dts: Fix dcan driver probe failed on am437x platform
[ Upstream commit 2a4117df9b436a0e4c79d211284ab2097bcd00dc ] Got following d_can probe errors with kernel 5.8-rc1 on am437x [ 10.730822] CAN device driver interface Starting Wait for Network to be Configured... [ OK ] Reached target Network. [ 10.787363] c_can_platform 481cc000.can: probe failed [ 10.792484] c_can_platform: probe of 481cc000.can failed with error -2 [ 10.799457] c_can_platform 481d0000.can: probe failed [ 10.804617] c_can_platform: probe of 481d0000.can failed with error -2 actually, Tony has fixed this issue on am335x with the patch [3] Since am437x has the same clock structure with am335x [1][2], so reuse the code from Tony Lindgren's patch [3] to fix it. [1]: https://www.ti.com/lit/pdf/spruh73 Chapter-23, Figure 23-1. DCAN Integration [2]: https://www.ti.com/lit/pdf/spruhl7 Chapter-25, Figure 25-1. DCAN Integration [3]: commit 516f1117d0fb ("ARM: dts: Configure osc clock for d_can on am335x") Fixes: 1a5cd7c23cc5 ("bus: ti-sysc: Enable all clocks directly during init to read revision") Signed-off-by: dillon min <dillon.minfei@gmail.com> [tony@atomide.com: aligned commit message a bit for readability] Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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