Messages in this thread | | | From | Martin Blumenstingl <> | Date | Wed, 21 Nov 2018 22:53:57 +0100 | Subject | Re: [PATCH] clk: meson: Fix GXL HDMI PLL fractional bits width |
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Hi Neil,
On Wed, Nov 21, 2018 at 12:19 PM Neil Armstrong <narmstrong@baylibre.com> wrote: > > The GXL Documentation specifies 12 bits for the Fractional bit field, > bit the last bits have a different purpose that we cannot handle right > now, so update the bitwidth to have correct fractional calculations. I assume you have more accurate documentation than what's available publicly: - the S805 datasheet doesn't have any documentation for this register at all - the S905 datasheet states that HHI_HDMI_PLL_CNTL2[11:0] are DIV_FRAC - the S905X and S912 datasheets state that SDMNC_POWER is at HHI_HDMI_PLL_CNTL2[6:0], SDMNC_ULMS is at HHI_HDMI_PLL_CNTL2[9:7] and SSC_DEP_SEL is at HHI_HDMI_PLL_CNTL2[13:10] - the S905X and S912 datasheets state that HHI_HDMI_PLL_CNTL1[11:0] are DIV_FRAC
can you confirm that the public S905X and S912 documentation is wrong and that the .frac field is really part of HHI_HDMI_PLL_CNTL2 instead of HHI_HDMI_PLL_CNTL1?
Regards Martin
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