RE: [PATCH 4/9] ARM: dts: stm32mp1: move FDCAN to PLL4_R

Hi, > From: Patrick DELAUNAY > Sent: mardi 28 janvier 2020 10:11 > > From: Antonio Borneo > > LTDC modifies the clock frequency to adapt it to the display. Such frequency > change is not detected by the FDCAN driver that instead cache the value at > probe > and pretend to use it later. > >

Re: [PATCH 4/9] ARM: dts: stm32mp1: move FDCAN to PLL4_R

On 2/6/20 9:59 AM, Patrick DELAUNAY wrote: > Hi Marek, Hello Patrick [...] >> My problem is with the bootloader-Linux clock tree dependency. That >> dependency >> should not exist or be minimized, otherwise you end up with a very poor >> long-term >> experience, see above. And if you want for

RE: [PATCH 4/9] ARM: dts: stm32mp1: move FDCAN to PLL4_R

Hi Marek, > From: Marek Vasut > Sent: mercredi 5 février 2020 03:23 > > On 2/4/20 2:16 PM, Patrick DELAUNAY wrote: > > Hi Marek > > Hello Patrick, > > [...] > > What I think you are missing is that not everyone will update > ATF/U-Boot/Linux in lockstep. That is the problem you

Re: [PATCH 4/9] ARM: dts: stm32mp1: move FDCAN to PLL4_R

On 2/4/20 2:16 PM, Patrick DELAUNAY wrote: > Hi Marek Hello Patrick, [...] What I think you are missing is that not everyone will update ATF/U-Boot/Linux in lockstep. That is the problem you need to deal with here. >>> >>> I understood the possible issue and I hope that I will

RE: [PATCH 4/9] ARM: dts: stm32mp1: move FDCAN to PLL4_R

Hi Marek > From: Marek Vasut > Sent: dimanche 2 février 2020 18:28 > > On 1/31/20 9:15 AM, Patrick DELAUNAY wrote: > > Hi Marek, > > Hi, > > >> From: Marek Vasut > >> Sent: jeudi 30 janvier 2020 03:23 > >> > >> On 1/29/20 5:51 PM, Patrick DELAUNAY wrote: > >>> Hi Marek, > >> > >> Hi, > >> >

Re: [PATCH 4/9] ARM: dts: stm32mp1: move FDCAN to PLL4_R

On 1/31/20 9:15 AM, Patrick DELAUNAY wrote: > Hi Marek, Hi, >> From: Marek Vasut >> Sent: jeudi 30 janvier 2020 03:23 >> >> On 1/29/20 5:51 PM, Patrick DELAUNAY wrote: >>> Hi Marek, >> >> Hi, >> From: Marek Vasut Sent: mardi 28 janvier 2020 13:16 On 1/28/20 10:11 AM,

RE: [PATCH 4/9] ARM: dts: stm32mp1: move FDCAN to PLL4_R

Hi Marek, > From: Marek Vasut > Sent: jeudi 30 janvier 2020 03:23 > > On 1/29/20 5:51 PM, Patrick DELAUNAY wrote: > > Hi Marek, > > Hi, > > >> From: Marek Vasut > >> Sent: mardi 28 janvier 2020 13:16 > >> > >> On 1/28/20 10:11 AM, Patrick Delaunay wrote: > >>> From: Antonio Borneo > >>> >

Re: [PATCH 4/9] ARM: dts: stm32mp1: move FDCAN to PLL4_R

On 1/29/20 5:51 PM, Patrick DELAUNAY wrote: > Hi Marek, Hi, >> From: Marek Vasut >> Sent: mardi 28 janvier 2020 13:16 >> >> On 1/28/20 10:11 AM, Patrick Delaunay wrote: >>> From: Antonio Borneo >>> >>> LTDC modifies the clock frequency to adapt it to the display. Such >>> frequency change is

RE: [PATCH 4/9] ARM: dts: stm32mp1: move FDCAN to PLL4_R

Hi Marek, > From: Marek Vasut > Sent: mardi 28 janvier 2020 13:16 > > On 1/28/20 10:11 AM, Patrick Delaunay wrote: > > From: Antonio Borneo > > > > LTDC modifies the clock frequency to adapt it to the display. Such > > frequency change is not detected by the FDCAN driver that instead > > cache

Re: [PATCH 4/9] ARM: dts: stm32mp1: move FDCAN to PLL4_R

On 1/28/20 10:11 AM, Patrick Delaunay wrote: > From: Antonio Borneo > > LTDC modifies the clock frequency to adapt it to the display. Such > frequency change is not detected by the FDCAN driver that instead > cache the value at probe and pretend to use it later. > > Keep the LTDC alone on