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i.MX7ULP: Workaround APLL PFD2 to 345.6Mhz
authorYe Li <ye.li@nxp.com>
Mon, 22 Jul 2019 01:25:03 +0000 (01:25 +0000)
committerStefano Babic <sbabic@denx.de>
Tue, 8 Oct 2019 14:35:16 +0000 (16:35 +0200)
commiteae4e0f3c10967386382b848ef80d9f8852d67a1
treec66f5df45fa1f1cd87ce256a4ae160cb1486b145tree | snapshot
parenteb6d2e5920fa518fc924025e1e7987cd0dde73adcommit | diff
i.MX7ULP: Workaround APLL PFD2 to 345.6Mhz

The GPU uses APLL PFD2 as its clock parent (483.84Mhz) with divider
set to 1. This frequecy is out of ULP A0 spec. The MAX rate for GPU
is 350Mhz. So we simply configure the APLL PFD2 to 345.6Mhz (FRAC=28)
to workaround the problem. The correct fix should let GPU handle the
clock rate in kernel.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
arch/arm/mach-imx/mx7ulp/clock.c diff | blob | history
My U-Boot fork