linux-kernel - [PATCH 0/4] RFC: firmware: meson-sm: add chipid sysfs export

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Message-Id: <20231102074916.3280809-1-adeep@lexina.in>
Date:   Thu,  2 Nov 2023 10:49:12 +0300
From:   Viacheslav Bocharov <adeep@...ina.in>
To:     Neil Armstrong <neil.armstrong@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCH 0/4] RFC: firmware: meson-sm: add chipid sysfs export

The Amlogic Meson SoC Secure Monitor implements a call to retrieve an
unique SoC ID starting from the GX Family and all new families.
But GX-family chips (e.g. GXB, GXL and newer) supports also 128-bit
chip ID. 128-bit chip ID consists 32-bit SoC version and 96-bit OTP data.

This patchset introduces an exported sysfs string for the 128-bit chipid,
considering a check for the version of the returned value. If the chip
does not support version 2 of the call, it falls back to (where possible)
information from the meson-gx-socinfo driver to supplement the data from OTP.

Viacheslav Bocharov (4):
  firmware: meson-sm: change sprintf to scnprintf
  firmware: meson_sm: Add chipid number sysfs entry
  soc: amlogic: meson-gx-socinfo: export socinfo for use in other
    modules
  firmware: meson_sm: use meson_gx_socinfo for compatibility

 drivers/firmware/meson/meson_sm.c      | 72 +++++++++++++++++++++++++-
 drivers/soc/amlogic/meson-gx-socinfo.c | 34 +++++++-----
 2 files changed, 90 insertions(+), 16 deletions(-)

-- 
2.34.1