From: "H. Nikolaus Schaller" <hns@goldelico.com>
To: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>,
Andreas Kemnade <andreas@kemnade.info>,
Paul Cercueil <paul@crapouillou.net>,
Mathieu Malaterre <malat@debian.org>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Ralf Baechle <ralf@linux-mips.org>,
Paul Burton <paulburton@kernel.org>,
Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
"H. Nikolaus Schaller" <hns@goldelico.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
Kees Cook <keescook@chromium.org>,
Andi Kleen <ak@linux.intel.com>,
Geert Uytterhoeven <geert+renesas@glider.be>
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-mips@vger.kernel.org, letux-kernel@openphoenux.org,
kernel@pyra-handheld.com
Subject: [PATCH v6 3/6] Documentation: ABI: nvmem: add documentation for JZ4780 efuse ABI
Date: Wed, 26 Feb 2020 12:15:58 +0100 [thread overview]
Message-ID: <e346f76db0cc8ff2f69f3eaf2230e354c29407a2.1582715761.git.hns@goldelico.com> (raw)
In-Reply-To: <cover.1582715761.git.hns@goldelico.com>
From: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
This patch brings support for the JZ4780 efuse. Currently it only exposes
a read only access to the entire 8K bits efuse memory.
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
---
.../ABI/testing/sysfs-driver-jz4780-efuse | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
create mode 100644 Documentation/ABI/testing/sysfs-driver-jz4780-efuse
diff --git a/Documentation/ABI/testing/sysfs-driver-jz4780-efuse b/Documentation/ABI/testing/sysfs-driver-jz4780-efuse
new file mode 100644
index 000000000000..bb6f5d6ceea0
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-jz4780-efuse
@@ -0,0 +1,16 @@
+What: /sys/devices/*/<our-device>/nvmem
+Date: December 2017
+Contact: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
+Description: read-only access to the efuse on the Ingenic JZ4780 SoC
+ The SoC has a one time programmable 8K efuse that is
+ split into segments. The driver supports read only.
+ The segments are
+ 0x000 64 bit Random Number
+ 0x008 128 bit Ingenic Chip ID
+ 0x018 128 bit Customer ID
+ 0x028 3520 bit Reserved
+ 0x1E0 8 bit Protect Segment
+ 0x1E1 2296 bit HDMI Key
+ 0x300 2048 bit Security boot key
+Users: any user space application which wants to read the Chip
+ and Customer ID
--
2.23.0
next prev parent reply other threads:[~2020-02-26 11:16 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-26 11:15 [PATCH v6 0/6] MIPS: CI20: Add efuse driver for Ingenic JZ4780 and attach to DM9000 for stable MAC addresses H. Nikolaus Schaller
2020-02-26 11:15 ` [PATCH v6 1/6] nvmem: add driver for JZ4780 efuse H. Nikolaus Schaller
2020-02-27 14:47 ` Paul Cercueil
2020-02-27 15:26 ` H. Nikolaus Schaller
2020-02-28 12:16 ` H. Nikolaus Schaller
2020-02-26 11:15 ` [PATCH v6 2/6] Bindings: nvmem: add bindings " H. Nikolaus Schaller
2020-02-27 14:49 ` Paul Cercueil
2020-02-27 14:55 ` H. Nikolaus Schaller
2020-02-26 11:15 ` H. Nikolaus Schaller [this message]
2020-02-26 11:15 ` [PATCH v6 4/6] nvmem: MAINTAINERS: add maintainer for JZ4780 efuse driver H. Nikolaus Schaller
2020-02-26 11:16 ` [PATCH v6 5/6] MIPS: DTS: JZ4780: define node for JZ4780 efuse H. Nikolaus Schaller
2020-02-27 14:57 ` Paul Cercueil
2020-02-27 15:26 ` H. Nikolaus Schaller
2020-02-27 15:39 ` Paul Cercueil
2020-02-26 11:16 ` [PATCH v6 6/6] MIPS: DTS: CI20: make DM9000 Ethernet controller use NVMEM to find the default MAC address H. Nikolaus Schaller
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