linux-kernel - [PATCH 2/3] Documentation: sysfs: brcmstb-memc: Document new attributes

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Message-Id: <20230324165231.3468069-3-f.fainelli@gmail.com>
Date:   Fri, 24 Mar 2023 09:52:30 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        linux-arm-kernel@...ts.infradead.org (moderated list:BROADCOM BCM7XXX
        ARM ARCHITECTURE)
Subject: [PATCH 2/3] Documentation: sysfs: brcmstb-memc: Document new attributes

Document the DDR rank, size, total size, width and type attributes.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 .../ABI/testing/sysfs-platform-brcmstb-memc   | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-platform-brcmstb-memc b/Documentation/ABI/testing/sysfs-platform-brcmstb-memc
index 2f2b750ac2fd..bc969c02b85f 100644
--- a/Documentation/ABI/testing/sysfs-platform-brcmstb-memc
+++ b/Documentation/ABI/testing/sysfs-platform-brcmstb-memc
@@ -1,3 +1,42 @@
+What:		/sys/bus/platform/devices/*/ddr_rank
+Date:		March 2023
+KernelVersion:	6.3
+Contact:	Florian Fainelli <f.fainelli@...il.com>
+Description:
+		Displays whether the device is single or dual rank.
+
+What:		/sys/bus/platform/devices/*/ddr_size
+Date:		March 2023
+KernelVersion:	6.3
+Contact:	Florian Fainelli <f.fainelli@...il.com>
+Description:
+		This field specifies the size of each DRAM device in the first
+		(or only) rank
+
+What:		/sys/bus/platform/devices/*/ddr_total_width
+Date:		March 2023
+KernelVersion:	6.3
+Contact:	Florian Fainelli <f.fainelli@...il.com>
+Description:
+		This field specifies the total data width of all DRAM devices
+		(in each rank)
+
+What:		/sys/bus/platform/devices/*/ddr_type
+Date:		March 2023
+KernelVersion:	6.3
+Contact:	Florian Fainelli <f.fainelli@...il.com>
+Description:
+		This field specifies DRAM technology type. Possible values:
+		DDR2, DDR3, DDR4, GDDR5, GDDR5M, LPDDR4.
+
+What:		/sys/bus/platform/devices/*/ddr_width
+Date:		March 2023
+KernelVersion:	6.3
+Contact:	Florian Fainelli <f.fainelli@...il.com>
+Description:
+		This field specifies the data width of each DRAM device.
+		Possible values are: x8, x16, x32
+
 What:		/sys/bus/platform/devices/*/srpd
 Date:		July 2022
 KernelVersion:	5.21
-- 
2.34.1