Re: [PATCH v2 19/26] drm/rockchip: dw-mipi-dsi: improve PLL configuration

2017-01-23 Thread Chris Zhong
On 01/23/2017 08:49 PM, John Keeping wrote: Hi Chris, On Mon, 23 Jan 2017 09:38:54 +0800, Chris Zhong wrote: On 01/22/2017 12:31 AM, John Keeping wrote: The multiplication ratio for the PLL is required to be even due to the use of a "by 2 pre-scaler". Currently we are likely to end up with

Re: [PATCH v2 19/26] drm/rockchip: dw-mipi-dsi: improve PLL configuration

2017-01-23 Thread John Keeping
Hi Chris, On Mon, 23 Jan 2017 09:38:54 +0800, Chris Zhong wrote: > On 01/22/2017 12:31 AM, John Keeping wrote: > > The multiplication ratio for the PLL is required to be even due to the > > use of a "by 2 pre-scaler". Currently we are likely to end up with an > > odd multiplier even though there

Re: [PATCH v2 19/26] drm/rockchip: dw-mipi-dsi: improve PLL configuration

2017-01-22 Thread Chris Zhong
Hi John On 01/22/2017 12:31 AM, John Keeping wrote: The multiplication ratio for the PLL is required to be even due to the use of a "by 2 pre-scaler". Currently we are likely to end up with an odd multiplier even though there is an equivalent set of parameters with an even multiplier. For

[PATCH v2 19/26] drm/rockchip: dw-mipi-dsi: improve PLL configuration

2017-01-21 Thread John Keeping
The multiplication ratio for the PLL is required to be even due to the use of a "by 2 pre-scaler". Currently we are likely to end up with an odd multiplier even though there is an equivalent set of parameters with an even multiplier. For example, using the 324MHz bit rate with a reference clock