From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx4+z8E6ez1NFFMLxyF0vQZB34vCiObEcgBxdRUjwZdHIGUxxQ0D58DYGTCH/IURurovd3mgp ARC-Seal: i=1; a=rsa-sha256; t=1522158783; cv=none; d=google.com; s=arc-20160816; b=jFKPqaGEU6je1TZSp+HFvSUo5jsLlGv//gFRL9U9wNMRg/VZr3fjIJ9YO8h0gue0jp 3ZCCSfYUIlrmLgqrwXFns+JTlAoKrSa7JA6KMv4LLqotBPDHo0LLDgxu+L8cSAvZjq+f E8Ge8vjZHnyYYp0PQriqHMxF2MYiJ+z21DvL6RVDHeqtKt1cBt7clcBgfHj+vQx66c/a j+j97N5FktygwV8zGqvtI1vO+nowLRLJ3tZhMcIMcBWGhJrqqBOBX7G/ATNaz2INKC4X J5JCXoO8SW6D5vkFQPZn+FCCFmJhxdz3OFLxPOTdV4pHlafANwETfrPIhMVZ6f1Mk34a sPwQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=message-id:date:subject:cc:to:from:arc-authentication-results; bh=N/X4Q6tJiDrqU85DQBpmj/bkWQbN2R+9pabCufHUqtw=; b=ihk7Lc9WqmG/qGf1d+YAyo5/+5hMJEp3AcWLTF+Q10dGHCnea1W/yYfmAo36lV/13D OjymafY7f7USEzfGShji55d6Q9iyGvkGQX+nU3IdIuD+7bv2xWsbjPthZ1CTs3ABlCW+ KNDZ3zp05VhwFGzQHnCYULXVMv0dacpdVM1oTiwbDptexl/5I4eg+5icSCOAaHvG0e4B 7kJTA6nsMZJhEZvFJMWfJM95jQrkJbEj/acR95lspdCIn415FbpGfQogk/mPfIlQrotu VPGixOop+jihXf3yYcbLL5egSW57QeFW8i3QD2Rb+ksRcUeoCVL3/B90zomfqwFoWhaW YjkA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of sebastian.reichel@collabora.co.uk designates 46.235.227.227 as permitted sender) smtp.mailfrom=sebastian.reichel@collabora.co.uk; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=collabora.co.uk Authentication-Results: mx.google.com; spf=pass (google.com: domain of sebastian.reichel@collabora.co.uk designates 46.235.227.227 as permitted sender) smtp.mailfrom=sebastian.reichel@collabora.co.uk; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=collabora.co.uk From: Sebastian Reichel To: Arnd Bergmann , Greg Kroah-Hartman , Shawn Guo , Rob Herring Cc: Sascha Hauer , Fabio Estevam , Mark Rutland , Nandor Han , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, kernel@collabora.com Subject: [PATCHv2 0/3] GE Healthcare PPD firmware upgrade driver for ACHC Date: Tue, 27 Mar 2018 15:52:56 +0200 Message-Id: <20180327135259.30890-1-sebastian.reichel@collabora.co.uk> X-Mailer: git-send-email 2.16.2 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1596099168711275767?= X-GMAIL-MSGID: =?utf-8?q?1596099168711275767?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Hi, The PPD has a secondary processor from NXP, which can be programmed from the main system. It is connected to the main processor by having it's EzPort interface connected to the SPI bus. This adds a generic driver to handle firmware flashing via NXP EzPort and adds a custom compatible for the instance found in GE's device. The reset gpio is only requested during flashing, since it is also used for resetting other devices. A better solution for the shared reset gpio is required at some point, but this does neither affect the userspace interface, nor the DT interface and should not block upstreaming this driver. Changes since PATCHv1: * split DT binding update into its own patch * add sysfs attribute documentation * fix problem reported by kbuild test robot -- Sebastian Sebastian Reichel (3): dt-bindings: misc: achc: Make ezport distinguishable misc: ezport-firmware: new driver ARM: dts: imx53: PPD: Update ACHC programming interface Documentation/ABI/testing/sysfs-bus-spi-ezport-fw | 23 + Documentation/devicetree/bindings/misc/ge-achc.txt | 19 +- arch/arm/boot/dts/imx53-ppd.dts | 5 +- drivers/misc/Kconfig | 9 + drivers/misc/Makefile | 1 + drivers/misc/ezport-firmware.c | 491 +++++++++++++++++++++ 6 files changed, 543 insertions(+), 5 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-bus-spi-ezport-fw create mode 100644 drivers/misc/ezport-firmware.c -- 2.16.2