| Message ID | 20220407071006.37031-1-tony@atomide.com |
|---|---|
| State | New |
| Headers | show |
| Series | [1/4] dt-bindings: timer: Add am6 compatible for ti-timer | expand |
On 07/04/2022 09:10, Tony Lindgren wrote: > Document the dual-mode timers available on am6. > > Cc: devicetree@vger.kernel.org > Cc: Keerthy <j-keerthy@ti.com> > Cc: Krzysztof Kozlowski <krzk+dt@kernel.org> > Cc: Nishanth Menon <nm@ti.com> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: Vignesh Raghavendra <vigneshr@ti.com> > Signed-off-by: Tony Lindgren <tony@atomide.com> > --- > Documentation/devicetree/bindings/timer/ti,timer.txt | 1 + > 1 file changed, 1 insertion(+) > Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
On 07/04/2022 09:10, Tony Lindgren wrote: > We have pwm-omap-dmtimer tagged with COMPILE_TEST, so we need to use the > ifdefs around the inline functions. Let's add ARCH_K3 to the list of SoCs > to allow using timer-ti-dm on these SoCs. > > Cc: Keerthy <j-keerthy@ti.com> > Cc: Nishanth Menon <nm@ti.com> > Cc: Vignesh Raghavendra <vigneshr@ti.com> > Signed-off-by: Tony Lindgren <tony@atomide.com> > --- > include/clocksource/timer-ti-dm.h | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/include/clocksource/timer-ti-dm.h b/include/clocksource/timer-ti-dm.h > --- a/include/clocksource/timer-ti-dm.h > +++ b/include/clocksource/timer-ti-dm.h > @@ -251,7 +251,8 @@ int omap_dm_timers_active(void); > * The below are inlined to optimize code size for system timers. Other code > * should not need these at all. > */ > -#if defined(CONFIG_ARCH_OMAP1) || defined(CONFIG_ARCH_OMAP2PLUS) > +#if defined(CONFIG_ARCH_OMAP1) || defined(CONFIG_ARCH_OMAP2PLUS) || \ > + defined(CONFIG_ARCH_K3) Why not replace the above by CONFIG_OMAP_DM_TIMER ? > static inline u32 __omap_dm_timer_read(struct omap_dm_timer *timer, u32 reg, > int posted) > { > @@ -390,5 +391,5 @@ static inline void __omap_dm_timer_write_status(struct omap_dm_timer *timer, > { > writel_relaxed(value, timer->irq_stat); > } > -#endif /* CONFIG_ARCH_OMAP1 || CONFIG_ARCH_OMAP2PLUS */ > +#endif /* CONFIG_ARCH_OMAP1 || CONFIG_ARCH_OMAP2PLUS || CONFIG_ARCH_K3 */ > #endif /* __CLOCKSOURCE_DMTIMER_H */
* Daniel Lezcano <daniel.lezcano@linaro.org> [220407 08:01]: > On 07/04/2022 09:10, Tony Lindgren wrote: > > @@ -251,7 +251,8 @@ int omap_dm_timers_active(void); > > * The below are inlined to optimize code size for system timers. Other code > > * should not need these at all. > > */ > > -#if defined(CONFIG_ARCH_OMAP1) || defined(CONFIG_ARCH_OMAP2PLUS) > > +#if defined(CONFIG_ARCH_OMAP1) || defined(CONFIG_ARCH_OMAP2PLUS) || \ > > + defined(CONFIG_ARCH_K3) > > Why not replace the above by CONFIG_OMAP_DM_TIMER ? Hmm that's a good question for why it was not that way earlier. This series changes things for tristate "OMAP dual-mode timer driver" if ARCH_K3 || COMPILE_TEST though. So the inline stubs are still needed for COMPILE_TEST it seems. Regards, Tony
* Daniel Lezcano <daniel.lezcano@linaro.org> [220407 08:23]: > On 07/04/2022 10:15, Tony Lindgren wrote: > > * Daniel Lezcano <daniel.lezcano@linaro.org> [220407 08:01]: > > > On 07/04/2022 09:10, Tony Lindgren wrote: > > > > @@ -251,7 +251,8 @@ int omap_dm_timers_active(void); > > > > * The below are inlined to optimize code size for system timers. Other code > > > > * should not need these at all. > > > > */ > > > > -#if defined(CONFIG_ARCH_OMAP1) || defined(CONFIG_ARCH_OMAP2PLUS) > > > > +#if defined(CONFIG_ARCH_OMAP1) || defined(CONFIG_ARCH_OMAP2PLUS) || \ > > > > + defined(CONFIG_ARCH_K3) > > > > > > Why not replace the above by CONFIG_OMAP_DM_TIMER ? > > > > Hmm that's a good question for why it was not that way earlier. > > > > This series changes things for tristate "OMAP dual-mode timer driver" if > > ARCH_K3 || COMPILE_TEST though. So the inline stubs are still needed for > > COMPILE_TEST it seems. > > But if ARCH_K3 or COMPILE_TEST is set, CONFIG_DM_TIMER is also set, no? Right but I suspect that COMPILE_TEST will produce a build error on other architectures. I need to check that though, maybe that is no longer the case. Regards, Tony
On 10:10-20220407, Tony Lindgren wrote: > Document the dual-mode timers available on am6. > > Cc: devicetree@vger.kernel.org > Cc: Keerthy <j-keerthy@ti.com> > Cc: Krzysztof Kozlowski <krzk+dt@kernel.org> > Cc: Nishanth Menon <nm@ti.com> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: Vignesh Raghavendra <vigneshr@ti.com> > Signed-off-by: Tony Lindgren <tony@atomide.com> > --- > Documentation/devicetree/bindings/timer/ti,timer.txt | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/Documentation/devicetree/bindings/timer/ti,timer.txt b/Documentation/devicetree/bindings/timer/ti,timer.txt > --- a/Documentation/devicetree/bindings/timer/ti,timer.txt > +++ b/Documentation/devicetree/bindings/timer/ti,timer.txt > @@ -14,6 +14,7 @@ Required properties: > ti,omap5430-timer (applicable to OMAP543x devices) > ti,am335x-timer (applicable to AM335x devices) > ti,am335x-timer-1ms (applicable to AM335x devices) > + ti,am6-timer (applicable to AM6 devices) Suggestion: Could we call this ti,am65-timer instead? AM6 is a bit nuanced and spans a couple of sub SoC architectures. > > - reg: Contains timer register address range (base address and > length). > -- > 2.35.1
* Nishanth Menon <nm@ti.com> [220407 13:28]: > On 10:10-20220407, Tony Lindgren wrote: > > Document the dual-mode timers available on am6. > > > > Cc: devicetree@vger.kernel.org > > Cc: Keerthy <j-keerthy@ti.com> > > Cc: Krzysztof Kozlowski <krzk+dt@kernel.org> > > Cc: Nishanth Menon <nm@ti.com> > > Cc: Rob Herring <robh+dt@kernel.org> > > Cc: Vignesh Raghavendra <vigneshr@ti.com> > > Signed-off-by: Tony Lindgren <tony@atomide.com> > > --- > > Documentation/devicetree/bindings/timer/ti,timer.txt | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/Documentation/devicetree/bindings/timer/ti,timer.txt b/Documentation/devicetree/bindings/timer/ti,timer.txt > > --- a/Documentation/devicetree/bindings/timer/ti,timer.txt > > +++ b/Documentation/devicetree/bindings/timer/ti,timer.txt > > @@ -14,6 +14,7 @@ Required properties: > > ti,omap5430-timer (applicable to OMAP543x devices) > > ti,am335x-timer (applicable to AM335x devices) > > ti,am335x-timer-1ms (applicable to AM335x devices) > > + ti,am6-timer (applicable to AM6 devices) > > > > - reg: Contains timer register address range (base address and > > length). > > -- > > 2.35.1 > > > We need to convert this into yaml prior to the dts updates patches :( OK I'll convert to yaml and send the binding patch separately. Regards, Tony
Hi, * Nishanth Menon <nm@ti.com> [220407 13:31]: > On 10:10-20220407, Tony Lindgren wrote: > > diff --git a/Documentation/devicetree/bindings/timer/ti,timer.txt b/Documentation/devicetree/bindings/timer/ti,timer.txt > > --- a/Documentation/devicetree/bindings/timer/ti,timer.txt > > +++ b/Documentation/devicetree/bindings/timer/ti,timer.txt > > @@ -14,6 +14,7 @@ Required properties: > > ti,omap5430-timer (applicable to OMAP543x devices) > > ti,am335x-timer (applicable to AM335x devices) > > ti,am335x-timer-1ms (applicable to AM335x devices) > > + ti,am6-timer (applicable to AM6 devices) > > Suggestion: > > Could we call this ti,am65-timer instead? AM6 is a bit nuanced and spans > a couple of sub SoC architectures. I think the timer hardware is the same across am64, am65 and j7. So we should pick something to represent the am6 timers as it would allow using shared dtsi files for the 16 - 30 timers there are. Using shared timer dtsi files should work as long as the clocks are defined in include/dt-bindings/clock for each SoC, and assuming we can use the same compatible property for the timers. Of course if the timers are really different across am64, am65 and j72 then multiple compatible properties are neeeded. If the timer hardware is the same, then I guess we should just pick the earliest version, so how about using ti,am64-timer? Regards, Tony
On 07:38-20220408, Tony Lindgren wrote: > Hi, > > * Nishanth Menon <nm@ti.com> [220407 13:31]: > > On 10:10-20220407, Tony Lindgren wrote: > > > diff --git a/Documentation/devicetree/bindings/timer/ti,timer.txt b/Documentation/devicetree/bindings/timer/ti,timer.txt > > > --- a/Documentation/devicetree/bindings/timer/ti,timer.txt > > > +++ b/Documentation/devicetree/bindings/timer/ti,timer.txt > > > @@ -14,6 +14,7 @@ Required properties: > > > ti,omap5430-timer (applicable to OMAP543x devices) > > > ti,am335x-timer (applicable to AM335x devices) > > > ti,am335x-timer-1ms (applicable to AM335x devices) > > > + ti,am6-timer (applicable to AM6 devices) > > > > Suggestion: > > > > Could we call this ti,am65-timer instead? AM6 is a bit nuanced and spans > > a couple of sub SoC architectures. > > I think the timer hardware is the same across am64, am65 and j7. So we > should pick something to represent the am6 timers as it would allow using > shared dtsi files for the 16 - 30 timers there are. > > Using shared timer dtsi files should work as long as the clocks are > defined in include/dt-bindings/clock for each SoC, and assuming we can use > the same compatible property for the timers. Compatible should work fine, Though I doubt clock and other indices (base address etc will scale appropriately), but we could give it a shot, but we can discuss that in the context of the dts patches. > > Of course if the timers are really different across am64, am65 and j72 > then multiple compatible properties are neeeded. > > If the timer hardware is the same, then I guess we should just pick the > earliest version, so how about using ti,am64-timer? yep - the oldest version will be ti,am654-timer ( AM65 was the first K3 device. Unfortunately, the numbering does'nt follow a chronological order)
* Nishanth Menon <nm@ti.com> [220408 07:31]: > On 07:38-20220408, Tony Lindgren wrote: > > Hi, > > > > * Nishanth Menon <nm@ti.com> [220407 13:31]: > > > On 10:10-20220407, Tony Lindgren wrote: > > > > diff --git a/Documentation/devicetree/bindings/timer/ti,timer.txt b/Documentation/devicetree/bindings/timer/ti,timer.txt > > > > --- a/Documentation/devicetree/bindings/timer/ti,timer.txt > > > > +++ b/Documentation/devicetree/bindings/timer/ti,timer.txt > > > > @@ -14,6 +14,7 @@ Required properties: > > > > ti,omap5430-timer (applicable to OMAP543x devices) > > > > ti,am335x-timer (applicable to AM335x devices) > > > > ti,am335x-timer-1ms (applicable to AM335x devices) > > > > + ti,am6-timer (applicable to AM6 devices) > > > > > > Suggestion: > > > > > > Could we call this ti,am65-timer instead? AM6 is a bit nuanced and spans > > > a couple of sub SoC architectures. > > > > I think the timer hardware is the same across am64, am65 and j7. So we > > should pick something to represent the am6 timers as it would allow using > > shared dtsi files for the 16 - 30 timers there are. > > > > Using shared timer dtsi files should work as long as the clocks are > > defined in include/dt-bindings/clock for each SoC, and assuming we can use > > the same compatible property for the timers. > > Compatible should work fine, Though I doubt clock and other indices > (base address etc will scale appropriately), but we could give it a > shot, but we can discuss that in the context of the dts patches. Yeah that's a separate series for sure and can be done later on after we have am6 timers working first. > > Of course if the timers are really different across am64, am65 and j72 > > then multiple compatible properties are neeeded. > > > > If the timer hardware is the same, then I guess we should just pick the > > earliest version, so how about using ti,am64-timer? > > yep - the oldest version will be ti,am654-timer ( AM65 was the first > K3 device. Unfortunately, the numbering does'nt follow a chronological > order) OK great, I will use ti,am654-timer then. Regards, Tony
diff --git a/Documentation/devicetree/bindings/timer/ti,timer.txt b/Documentation/devicetree/bindings/timer/ti,timer.txt --- a/Documentation/devicetree/bindings/timer/ti,timer.txt +++ b/Documentation/devicetree/bindings/timer/ti,timer.txt @@ -14,6 +14,7 @@ Required properties: ti,omap5430-timer (applicable to OMAP543x devices) ti,am335x-timer (applicable to AM335x devices) ti,am335x-timer-1ms (applicable to AM335x devices) + ti,am6-timer (applicable to AM6 devices) - reg: Contains timer register address range (base address and length).
Document the dual-mode timers available on am6. Cc: devicetree@vger.kernel.org Cc: Keerthy <j-keerthy@ti.com> Cc: Krzysztof Kozlowski <krzk+dt@kernel.org> Cc: Nishanth Menon <nm@ti.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Vignesh Raghavendra <vigneshr@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> --- Documentation/devicetree/bindings/timer/ti,timer.txt | 1 + 1 file changed, 1 insertion(+)