[U-Boot] [PATCH 3/5] mx7ulp_evk: Change APLL and its PFD0 frequencies

sbabic at denx.de sbabic at denx.de
Sat Jul 20 08:45:25 UTC 2019


> From: Ye Li <ye.li at nxp.com>
> To support HDMI display on EVK board, the LCDIF pix clock must be
> 25.2Mhz. Since the its PCC divider range is from 1-8, the max rate
> of LCDIF PCC source clock is 201.6Mhz. This limits the source clock
> must from NIC1 bus clock or NIC1 clock, other sources from APLL PFDs
> are higher than this max rate.
> The NIC1 bus clock and NIC1 clock are from DDRCLK whose parent source
> is APLL PFD0, so we must change the APLL PFD0 and have impact to DDRCLK,
> NIC1 and NIC1 bus.
> Eventually, this requests to set the APLL PFD0 frequency to 302.4Mhz
> (25.2 * 12), with settings:
> PFD0 FRAC:  32
> APLL MULT:  22
> APLL NUM:   2
> APLL DENOM: 5
> Signed-off-by: Ye Li <ye.li at nxp.com>
> Tested-by: Fancy Fang <chen.fang at nxp.com>
> Signed-off-by: Peng Fan <peng.fan at nxp.com>

Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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