linux-kernel - Re: [PATCH v5 15/15] reset: elbasr: Add AMD Pensando Elba SR Reset Controller

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Date:   Tue, 14 Jun 2022 15:34:28 -0600
From:   Rob Herring <robh@...nel.org>
To:     Brad Larson <brad@...sando.io>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mmc@...r.kernel.org, adrian.hunter@...el.com,
        alcooperx@...il.com, andy.shevchenko@...il.com, arnd@...db.de,
        blarson@....com, brijeshkumar.singh@....com,
        catalin.marinas@....com, gsomlo@...il.com, gerg@...ux-m68k.org,
        krzk@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        lee.jones@...aro.org, broonie@...nel.org,
        yamada.masahiro@...ionext.com, p.zabel@...gutronix.de,
        piotrs@...ence.com, p.yadav@...com, rdunlap@...radead.org,
        samuel@...lland.org, fancer.lancer@...il.com,
        suravee.suthikulpanit@....com, thomas.lendacky@....com,
        ulf.hansson@...aro.org, will@...nel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v5 15/15] reset: elbasr: Add AMD Pensando Elba SR Reset
 Controller

On Mon, Jun 13, 2022 at 12:56:58PM -0700, Brad Larson wrote:
> From: Brad Larson <blarson@....com>
> 
> This patch adds the reset controller functionality for the
> AMD Pensando Elba System Resource Chip.
> 
> Signed-off-by: Brad Larson <blarson@....com>
> ---
>  drivers/reset/Kconfig                         |  9 ++
>  drivers/reset/Makefile                        |  1 +
>  drivers/reset/reset-elbasr.c                  | 94 +++++++++++++++++++
>  .../reset/amd,pensando-elba-reset.h           | 11 +++

This goes with the binding patch

>  4 files changed, 115 insertions(+)
>  create mode 100644 drivers/reset/reset-elbasr.c
>  create mode 100644 include/dt-bindings/reset/amd,pensando-elba-reset.h
> 
> diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
> index 93c8d07ee328..13f5a8ca0f03 100644
> --- a/drivers/reset/Kconfig
> +++ b/drivers/reset/Kconfig
> @@ -66,6 +66,15 @@ config RESET_BRCMSTB_RESCAL
>  	  This enables the RESCAL reset controller for SATA, PCIe0, or PCIe1 on
>  	  BCM7216.
>  
> +config RESET_ELBASR
> +	tristate "Pensando Elba System Resource reset controller"
> +	depends on MFD_PENSANDO_ELBASR || COMPILE_TEST
> +	help
> +	  This option enables support for the external reset functions
> +	  on the Pensando Elba System Resource Chip.  Reset control
> +	  of peripherals is accessed over SPI to the system resource
> +	  chip device registers using CS0.
> +
>  config RESET_HSDK
>  	bool "Synopsys HSDK Reset Driver"
>  	depends on HAS_IOMEM
> diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
> index a80a9c4008a7..c0fe12b9950e 100644
> --- a/drivers/reset/Makefile
> +++ b/drivers/reset/Makefile
> @@ -10,6 +10,7 @@ obj-$(CONFIG_RESET_BCM6345) += reset-bcm6345.o
>  obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
>  obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
>  obj-$(CONFIG_RESET_BRCMSTB_RESCAL) += reset-brcmstb-rescal.o
> +obj-$(CONFIG_RESET_ELBASR) += reset-elbasr.o
>  obj-$(CONFIG_RESET_HSDK) += reset-hsdk.o
>  obj-$(CONFIG_RESET_IMX7) += reset-imx7.o
>  obj-$(CONFIG_RESET_INTEL_GW) += reset-intel-gw.o
> diff --git a/drivers/reset/reset-elbasr.c b/drivers/reset/reset-elbasr.c
> new file mode 100644
> index 000000000000..6e429cb11466
> --- /dev/null
> +++ b/drivers/reset/reset-elbasr.c
> @@ -0,0 +1,94 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)

Kernel code is GPL-2.0-only generally.