Subject: [PATCH] ARM: OMAP2+: hwmod: Change hardreset soc_ops for AM43XX

From: [email-masked] (Dave Gerlach)
Date: Mon, 16 Jun 2014 15:11:58 -0500

On 06/15/2014 08:56 PM, Paul Walmsley wrote:
> On Fri, 13 Jun 2014, Paul Walmsley wrote:
>
>> On Mon, 9 Jun 2014, Dave Gerlach wrote:
>>
>>> am43xx reset register layout is more similar to am33xx than omap4 so
>>> use the am33xx functions for hwmod hardreset soc_ops rather than the
>>> currently used omap4 functions. Without this, assert_hardreset and
>>> deassert_hardreset will not work on am43xx.
>>>
>>> Signed-off-by: Dave Gerlach <[email-masked]>
>>
>> Makes sense to me; queued for v3.16-rc.
>
> The patch failed a build test for an AM43xx-only config:
>
> ----
> arch/arm/mach-omap2/built-in.o: In function `_am33xx_is_hardreset_asserted':
> arch/arm/mach-omap2/omap_hwmod.c:3223: undefined reference to `am33xx_prm_is_hardreset_asserted'
> arch/arm/mach-omap2/built-in.o: In function `_am33xx_deassert_hardreset':
> arch/arm/mach-omap2/omap_hwmod.c:3201: undefined reference to `am33xx_prm_deassert_hardreset'
> arch/arm/mach-omap2/built-in.o: In function `_am33xx_assert_hardreset':
> arch/arm/mach-omap2/omap_hwmod.c:3181:
> undefined reference to `am33xx_prm_assert_hardreset'
> make: *** [vmlinux] Error 1
> ----
>
> I went ahead and modified the patch to build (updated patch below), but it
> would be helpful if you could also build-test your AM43xx-specific patches
> with an AM43xx-specific .config (along with the usual
> omap2plus_defconfig).
>

Sorry about that, I definitely should have tried that, thanks for the fixup!

Regards,
Dave

>
> - Paul
>
> From: Dave Gerlach <[email-masked]>
> Date: Sun, 15 Jun 2014 16:02:17 -0600
> Subject: [PATCH 1/2] ARM: OMAP2+: hwmod: Change hardreset soc_ops for AM43XX
>
> am43xx reset register layout is more similar to am33xx than omap4 so
> use the am33xx functions for hwmod hardreset soc_ops rather than the
> currently used omap4 functions. Without this, assert_hardreset and
> deassert_hardreset will not work on am43xx.
>
> Signed-off-by: Dave Gerlach <[email-masked]>
> [paul at pwsan.com: fixed build errors for an AM43xx-only Kconfig]
> Signed-off-by: Paul Walmsley <[email-masked]>
> ---
>   arch/arm/mach-omap2/Makefile     | 6 ++++--
>   arch/arm/mach-omap2/cm33xx.h     | 2 +-
>   arch/arm/mach-omap2/omap_hwmod.c | 6 +++---
>   3 files changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
> index 8421f38cf445..7a695362aee7 100644
> --- a/arch/arm/mach-omap2/Makefile
> +++ b/arch/arm/mach-omap2/Makefile
> @@ -110,14 +110,16 @@ obj-y					+= prm_common.o cm_common.o
>   obj-$(CONFIG_ARCH_OMAP2)		+= prm2xxx_3xxx.o prm2xxx.o cm2xxx.o
>   obj-$(CONFIG_ARCH_OMAP3)		+= prm2xxx_3xxx.o prm3xxx.o cm3xxx.o
>   obj-$(CONFIG_ARCH_OMAP3)		+= vc3xxx_data.o vp3xxx_data.o
> -obj-$(CONFIG_SOC_AM33XX)		+= prm33xx.o cm33xx.o
>   omap-prcm-4-5-common			=  cminst44xx.o cm44xx.o prm44xx.o \
>   					   prcm_mpu44xx.o prminst44xx.o \
>   					   vc44xx_data.o vp44xx_data.o
>   obj-$(CONFIG_ARCH_OMAP4)		+= $(omap-prcm-4-5-common)
>   obj-$(CONFIG_SOC_OMAP5)			+= $(omap-prcm-4-5-common)
>   obj-$(CONFIG_SOC_DRA7XX)		+= $(omap-prcm-4-5-common)
> -obj-$(CONFIG_SOC_AM43XX)		+= $(omap-prcm-4-5-common)
> +am33xx-43xx-prcm-common			+= prm33xx.o
> +obj-$(CONFIG_SOC_AM33XX)		+= $(am33xx-43xx-prcm-common) cm33xx.o
> +obj-$(CONFIG_SOC_AM43XX)		+= $(omap-prcm-4-5-common) \
> +					   $(am33xx-43xx-prcm-common)
>
>   # OMAP voltage domains
>   voltagedomain-common			:= voltage.o vc.o vp.o
> diff --git a/arch/arm/mach-omap2/cm33xx.h b/arch/arm/mach-omap2/cm33xx.h
> index 15a778ce7707..bd2441790779 100644
> --- a/arch/arm/mach-omap2/cm33xx.h
> +++ b/arch/arm/mach-omap2/cm33xx.h
> @@ -380,7 +380,7 @@ void am33xx_cm_clkdm_disable_hwsup(u16 inst, u16 cdoffs);
>   void am33xx_cm_clkdm_force_sleep(u16 inst, u16 cdoffs);
>   void am33xx_cm_clkdm_force_wakeup(u16 inst, u16 cdoffs);
>
> -#ifdef CONFIG_SOC_AM33XX
> +#if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX)
>   extern int am33xx_cm_wait_module_idle(u16 inst, s16 cdoffs,
>   					u16 clkctrl_offs);
>   extern void am33xx_cm_module_enable(u8 mode, u16 inst, s16 cdoffs,
> diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
> index f7bb435bb543..6c074f37cdd2 100644
> --- a/arch/arm/mach-omap2/omap_hwmod.c
> +++ b/arch/arm/mach-omap2/omap_hwmod.c
> @@ -4251,9 +4251,9 @@ void __init omap_hwmod_init(void)
>   		soc_ops.enable_module = _omap4_enable_module;
>   		soc_ops.disable_module = _omap4_disable_module;
>   		soc_ops.wait_target_ready = _omap4_wait_target_ready;
> -		soc_ops.assert_hardreset = _omap4_assert_hardreset;
> -		soc_ops.deassert_hardreset = _omap4_deassert_hardreset;
> -		soc_ops.is_hardreset_asserted = _omap4_is_hardreset_asserted;
> +		soc_ops.assert_hardreset = _am33xx_assert_hardreset;
> +		soc_ops.deassert_hardreset = _am33xx_deassert_hardreset;
> +		soc_ops.is_hardreset_asserted = _am33xx_is_hardreset_asserted;
>   		soc_ops.init_clkdm = _init_clkdm;
>   	} else if (soc_is_am33xx()) {
>   		soc_ops.enable_module = _am33xx_enable_module;
>