Re: [PATCH V2 01/12] irqchip: tegra: do not disable COP IRQ during suspend

[Thierry Reding]

On Tue, May 28, 2019 at 04:08:45PM -0700, Sowjanya Komatineni wrote:
> Tegra210 platforms use sc7 entry firmware to program Tegra LP0/SC7 entry
> sequence and sc7 entry firmware is run from COP/BPMP-Lite.
> 
> So, COP/BPMP-Lite still need IRQ function to finish SC7 suspend sequence
> for Tegra210.
> 
> This patch has fix for leaving the COP IRQ enabled for Tegra210 during
> interrupt controller suspend operation.
> 
> Signed-off-by: Sowjanya Komatineni <skomatineni@xxxxxxxxxx>
> ---
>  drivers/irqchip/irq-tegra.c | 22 ++++++++++++++++++++--
>  1 file changed, 20 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/irqchip/irq-tegra.c b/drivers/irqchip/irq-tegra.c
> index 0abc0cd1c32e..deab3ba606e2 100644
> --- a/drivers/irqchip/irq-tegra.c
> +++ b/drivers/irqchip/irq-tegra.c
> @@ -53,18 +53,22 @@ static unsigned int num_ictlrs;
>  
>  struct tegra_ictlr_soc {
>  	unsigned int num_ictlrs;
> +	bool has_bpmp_fw;

This seems slightly inaccurate to me. My understanding is that we need
the AVP/COP to enter/exit SC7 irrespective of whether it runs the BPMP
lite firmware. Perhaps something like "supports_sc7" would be a little
more accurate?

Other than that:

Acked-by: Thierry Reding <treding@xxxxxxxxxx>

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