From: Maxime Ripard <maxime.ripard@bootlin.com>
To: "Mylène Josserand" <mylene.josserand@bootlin.com>
Cc: linux@armlinux.org.uk, wens@csie.org, marc.zyngier@arm.com,
mark.rutland@arm.com, robh+dt@kernel.org,
devicetree@vger.kernel.org, clabbe.montjoie@gmail.com,
quentin.schulz@bootlin.com, thomas.petazzoni@bootlin.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 08/13] ARM: sunxi: Add initialization of CNTVOFF
Date: Tue, 3 Apr 2018 11:12:18 +0200 [thread overview]
Message-ID: <20180403091218.t6xuq6csjp4uyy5u@flea> (raw)
In-Reply-To: <20180403061836.3926-9-mylene.josserand@bootlin.com>
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On Tue, Apr 03, 2018 at 08:18:31AM +0200, Mylène Josserand wrote:
> Add the initialization of CNTVOFF for sun8i-a83t.
>
> For boot CPU, Create a new machine that handles this
> function's call in an "init_early" callback.
> For secondary CPUs, add this function into secondary_startup
> assembly entry.
>
> Signed-off-by: Mylène Josserand <mylene.josserand@bootlin.com>
> ---
> arch/arm/mach-sunxi/headsmp.S | 1 +
> arch/arm/mach-sunxi/sunxi.c | 18 +++++++++++++++++-
> 2 files changed, 18 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-sunxi/headsmp.S b/arch/arm/mach-sunxi/headsmp.S
> index 79890fbe5613..b586b7cf803a 100644
> --- a/arch/arm/mach-sunxi/headsmp.S
> +++ b/arch/arm/mach-sunxi/headsmp.S
> @@ -71,6 +71,7 @@ ENDPROC(sunxi_mc_smp_cluster_cache_enable)
>
> ENTRY(sunxi_mc_smp_secondary_startup)
> bl sunxi_mc_smp_cluster_cache_enable
> + bl smp_init_cntvoff
> b secondary_startup
> ENDPROC(sunxi_mc_smp_secondary_startup)
>
> diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
> index 5e9602ce1573..090784108c0a 100644
> --- a/arch/arm/mach-sunxi/sunxi.c
> +++ b/arch/arm/mach-sunxi/sunxi.c
> @@ -16,6 +16,7 @@
> #include <linux/platform_device.h>
>
> #include <asm/mach/arch.h>
> +#include <asm/smp_cntvoff.h>
>
> static const char * const sunxi_board_dt_compat[] = {
> "allwinner,sun4i-a10",
> @@ -62,7 +63,6 @@ MACHINE_END
> static const char * const sun8i_board_dt_compat[] = {
> "allwinner,sun8i-a23",
> "allwinner,sun8i-a33",
> - "allwinner,sun8i-a83t",
> "allwinner,sun8i-h2-plus",
> "allwinner,sun8i-h3",
> "allwinner,sun8i-r40",
> @@ -75,6 +75,22 @@ DT_MACHINE_START(SUN8I_DT, "Allwinner sun8i Family")
> .dt_compat = sun8i_board_dt_compat,
> MACHINE_END
>
> +void __init sun8i_cntvoff_init(void)
> +{
> + smp_init_cntvoff();
Can't this be moved to the SMP setup code?
> +}
> +
> +static const char * const sun8i_cntvoff_board_dt_compat[] = {
> + "allwinner,sun8i-a83t",
> + NULL,
> +};
> +
> +DT_MACHINE_START(SUN8I_CNTVOFF_DT, "Allwinner sun8i boards needing cntvoff")
All of the SoCs need CNTVOFF, so that doesn't really make sense. Why
not just calling it for what it is: an A83t?
Maxime
--
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
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next prev parent reply other threads:[~2018-04-03 9:12 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-03 6:18 [PATCH v5 00/13] Sunxi: Add SMP support on A83T Mylène Josserand
2018-04-03 6:18 ` [PATCH v5 01/13] ARM: move cputype definitions into another file Mylène Josserand
2018-04-03 6:52 ` Chen-Yu Tsai
2018-04-03 7:27 ` Mylène Josserand
2018-04-03 7:34 ` Chen-Yu Tsai
2018-04-03 19:56 ` Florian Fainelli
2018-04-04 13:49 ` Mylène Josserand
2018-04-03 6:18 ` [PATCH v5 02/13] ARM: sunxi: smp: Move assembly code into a file Mylène Josserand
2018-04-03 6:18 ` [PATCH v5 03/13] ARM: sunxi: smp: Move cpu_resume assembly entry into file Mylène Josserand
2018-04-03 6:18 ` [PATCH v5 04/13] ARM: dts: sun8i: Add CPUCFG device node for A83T dtsi Mylène Josserand
2018-04-03 6:45 ` Chen-Yu Tsai
2018-04-03 6:18 ` [PATCH v5 05/13] ARM: dts: sun8i: Add R_CPUCFG device node for the " Mylène Josserand
2018-04-03 9:07 ` Chen-Yu Tsai
2018-04-03 19:52 ` Mylène Josserand
2018-04-03 6:18 ` [PATCH v5 06/13] ARM: dts: sun8i: a83t: Add CCI-400 node Mylène Josserand
2018-04-03 6:44 ` Chen-Yu Tsai
2018-04-03 6:18 ` [PATCH v5 07/13] ARM: smp: Add initialization of CNTVOFF Mylène Josserand
2018-04-04 13:01 ` Marc Zyngier
2018-04-04 13:59 ` Mylène Josserand
2018-04-04 14:30 ` Marc Zyngier
2018-04-09 8:24 ` Geert Uytterhoeven
2018-04-09 9:04 ` Marc Zyngier
2018-04-11 7:44 ` Mylène Josserand
2018-04-03 6:18 ` [PATCH v5 08/13] ARM: sunxi: " Mylène Josserand
2018-04-03 9:12 ` Maxime Ripard [this message]
2018-04-03 20:06 ` Mylène Josserand
2018-04-04 7:45 ` Maxime Ripard
2018-04-08 9:09 ` Mylène Josserand
2018-04-09 9:24 ` Maxime Ripard
2018-04-03 11:13 ` kbuild test robot
2018-04-03 6:18 ` [PATCH v5 09/13] ARM: sun9i: smp: Rename clusters's power-off Mylène Josserand
2018-04-03 9:06 ` Chen-Yu Tsai
2018-04-03 6:18 ` [PATCH v5 10/13] ARM: sun9i: smp: Move structures Mylène Josserand
2018-04-03 8:47 ` Maxime Ripard
2018-04-03 8:51 ` Chen-Yu Tsai
2018-04-03 6:18 ` [PATCH v5 11/13] ARM: sun9i: smp: Add is_sun9i field Mylène Josserand
2018-04-03 8:46 ` Maxime Ripard
2018-04-03 8:48 ` Chen-Yu Tsai
2018-04-03 20:08 ` Mylène Josserand
2018-04-03 6:18 ` [PATCH v5 12/13] ARM: sun8i: smp: Add support for A83T Mylène Josserand
2018-04-03 8:47 ` Chen-Yu Tsai
2018-04-03 20:21 ` Mylène Josserand
2018-04-03 6:18 ` [PATCH v5 13/13] ARM: dts: sun8i: Add enable-method for SMP support for the A83T SoC Mylène Josserand
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