From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Peter Yin <peteryin.openbmc@gmail.com>,
patrick@stwcx.xyz, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>, Joel Stanley <joel@jms.id.au>,
Andrew Jeffery <andrew@codeconstruct.com.au>,
Wim Van Sebroeck <wim@linux-watchdog.org>,
Guenter Roeck <linux@roeck-us.net>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org,
linux-watchdog@vger.kernel.org
Subject: Re: [PATCH v2] drivers: watchdog: ast2600 support bootstatus
Date: Mon, 18 Mar 2024 08:58:24 +0100 [thread overview]
Message-ID: <d94a4833-3fe2-4dfa-be88-9508971d12bd@linaro.org> (raw)
In-Reply-To: <20240318055219.3460121-1-peteryin.openbmc@gmail.com>
On 18/03/2024 06:52, Peter Yin wrote:
> Add WDIOF_EXTERN1 and WDIOF_CARDRESET bootstatus in ast2600
>
> Regarding the AST2600 specification, the WDTn Timeout Status Register
> (WDT10) has bit 1 reserved. To verify the second boot source,
> we need to check SEC14 bit 12 and bit 13.
> The bits 8-23 in the WDTn Timeout Status Register are the Watchdog
> Event Count, which we can use to verify WDIOF_EXTERN1.
>
> Signed-off-by: Peter Yin <peteryin.openbmc@gmail.com>
> ---
> Change log:
>
> v1 -> v2
> - Add comment and support WDIOF_CARDRESET in ast2600
>
> v1
> - Patch 0001 - Add WDIOF_EXTERN1 bootstatus
> ---
> arch/arm/boot/dts/aspeed/aspeed-g6.dtsi | 8 ++---
No, DTS is always separate patchset.
> drivers/watchdog/aspeed_wdt.c | 45 ++++++++++++++++++++++---
> 2 files changed, 44 insertions(+), 9 deletions(-)
>
> diff --git a/arch/arm/boot/dts/aspeed/aspeed-g6.dtsi b/arch/arm/boot/dts/aspeed/aspeed-g6.dtsi
> index e0b44498269f..23ae7f0430e9 100644
> --- a/arch/arm/boot/dts/aspeed/aspeed-g6.dtsi
> +++ b/arch/arm/boot/dts/aspeed/aspeed-g6.dtsi
> @@ -556,24 +556,24 @@ uart5: serial@1e784000 {
>
> wdt1: watchdog@1e785000 {
> compatible = "aspeed,ast2600-wdt";
> - reg = <0x1e785000 0x40>;
> + reg = <0x1e785000 0x40>, <0x1e6f2000 0x20>;
And how does it pass dtbs_check? Where did you update the bindings?
> };
>
> wdt2: watchdog@1e785040 {
> compatible = "aspeed,ast2600-wdt";
> - reg = <0x1e785040 0x40>;
> + reg = <0x1e785040 0x40>, <0x1e6f2000 0x020>;
> status = "disabled";
> };
>
> wdt3: watchdog@1e785080 {
> compatible = "aspeed,ast2600-wdt";
> - reg = <0x1e785080 0x40>;
> + reg = <0x1e785080 0x40>, <0x1e6f2000 0x020>;
> status = "disabled";
> };
>
> wdt4: watchdog@1e7850c0 {
> compatible = "aspeed,ast2600-wdt";
> - reg = <0x1e7850C0 0x40>;
> + reg = <0x1e7850C0 0x40>, <0x1e6f2000 0x020>;
> status = "disabled";
> };
>
> diff --git a/drivers/watchdog/aspeed_wdt.c b/drivers/watchdog/aspeed_wdt.c
> index b4773a6aaf8c..65118e461130 100644
> --- a/drivers/watchdog/aspeed_wdt.c
> +++ b/drivers/watchdog/aspeed_wdt.c
> @@ -33,6 +33,7 @@ struct aspeed_wdt {
> void __iomem *base;
> u32 ctrl;
> const struct aspeed_wdt_config *cfg;
> + void __iomem *sec_base;
> };
>
> static const struct aspeed_wdt_config ast2400_config = {
> @@ -82,6 +83,15 @@ MODULE_DEVICE_TABLE(of, aspeed_wdt_of_table);
> #define WDT_RESET_MASK1 0x1c
> #define WDT_RESET_MASK2 0x20
>
> +/*
> + * Only Ast2600 support
> + */
> +#define WDT_EVENT_COUNTER_MASK (0xFFF << 8)
> +#define WDT_SECURE_ENGINE_STATUS (0x14)
> +#define ABR_IMAGE_SOURCE BIT(12)
> +#define ABR_IMAGE_SOURCE_SPI BIT(13)
> +#define SECOND_BOOT_ENABLE BIT(14)
> +
> /*
> * WDT_RESET_WIDTH controls the characteristics of the external pulse (if
> * enabled), specifically:
> @@ -313,6 +323,7 @@ static int aspeed_wdt_probe(struct platform_device *pdev)
> const char *reset_type;
> u32 duration;
> u32 status;
> + u32 sec_st;
> int ret;
>
> wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
> @@ -330,6 +341,12 @@ static int aspeed_wdt_probe(struct platform_device *pdev)
> if (IS_ERR(wdt->base))
> return PTR_ERR(wdt->base);
>
> + if (of_device_is_compatible(np, "aspeed,ast2600-wdt")) {
> + wdt->sec_base = devm_platform_ioremap_resource(pdev, 1);
> + if (IS_ERR(wdt->sec_base))
> + return PTR_ERR(wdt->sec_base);
> + }
NAK, ABI break without clear reason.
Best regards,
Krzysztof
next prev parent reply other threads:[~2024-03-18 7:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-18 5:52 [PATCH v2] drivers: watchdog: ast2600 support bootstatus Peter Yin
2024-03-18 7:58 ` Krzysztof Kozlowski [this message]
2024-03-19 0:46 ` Guenter Roeck
2024-03-20 9:05 ` PeterYin
2024-03-25 17:06 ` Guenter Roeck
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