On Sun, 14 Feb 2016 14:44:36 +0100 Marek Vasut <marex@xxxxxxx> wrote: > On 02/13/2016 10:58 PM, Antony Pavlov wrote: > > From: Weijie Gao <hackpascal@xxxxxxxxx> > > > > According to the AR7242 datasheet section 2.8, AR724X CPUs use a 40MHz > > input clock as the REF_CLK instead of 5MHz. > > Can't the AR71xx also use 25MHz clock source ? I have just googled AR7242 datasheet. I states that only 40 MHz reference clock is used. > > The correct CPU PLL calculation procedure is as follows: > > CPU_PLL = (FB * REF_CLK) / REF_DIV / 2. > > [...] -- -- Best regards, Antony Pavlov
