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nvmem: Add a simple NVMEM framework for nvmem providers This patch adds just providers part of the framework just to enable easy review. Up until now, NVMEM drivers like eeprom were stored in drivers/misc, where they all had to duplicate pretty much the same code to register a sysfs file, allow in-kernel users to access the content of the devices they were driving, etc. This was also a problem as far as other in-kernel users were involved, since the solutions used were pretty much different from on driver to another, there was a rather big abstraction leak. This introduction of this framework aims at solving this. It also introduces DT representation for consumer devices to go get the data they require (MAC Addresses, SoC/Revision ID, part numbers, and so on) from the nvmems. Having regmap interface to this framework would give much better abstraction for nvmems on different buses. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> [Maxime Ripard: intial version of eeprom framework] Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Tested-by: Philipp Zabel <p.zabel@pengutronix.de> Tested-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-27 12:13:19 +01:00
nvmem: qfprom: Add Qualcomm QFPROM support. This patch adds QFPROM support driver which is used by other drivers like thermal sensor and cpufreq. On MSM parts there are some efuses (called qfprom) these fuses store things like calibration data, speed bins.. etc. Drivers like cpufreq, thermal sensors would read out this data for configuring the driver. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Philipp Zabel <p.zabel@pengutronix.de> Tested-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-27 12:15:00 +01:00
nvmem: Add driver for the i.MX IIM This adds a readonly nvmem driver for the i.MX IC Identification Module (IIM). The IIM is found on the older i.MX SoCs like the i.MX25, i.MX27, i.MX31, i.MX35, i.MX51 and the i.MX53. The IIM can control up to 8 fuse banks with 256 bit each. Not all of the banks are equipped on the different SoCs. The actual number of fuses differ from 512 on the i.MX27 and 1152 on the i.MX53. The fuses are one time writable, but writing is currently not supported in the driver. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-31 13:44:50 +01:00
nvmem: imx-ocotp: Add i.MX6 OCOTP driver This driver handles the i.MX On-Chip OTP Controller found in i.MX6Q/D, i.MX6S/DL, i.MX6SL, and i.MX6SX SoCs. Currently it just returns the values stored in the shadow registers. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-30 13:55:47 +01:00
nvmem: imx-ocotp: add COMPILE_TEST for proper test coverage This patch add COMPILE_TEST to imx-ocotp driver so that it can be compile tested on other platforms with zero day testing. Also adds HAS_IOMEM dependancy as the users of devm_ioremap_resource() which are compile-testable should depend on HAS_IOMEM. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-02 12:19:43 +01:00
nvmem: imx-ocotp: Add i.MX6 OCOTP driver This driver handles the i.MX On-Chip OTP Controller found in i.MX6Q/D, i.MX6S/DL, i.MX6SL, and i.MX6SX SoCs. Currently it just returns the values stored in the shadow registers. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-30 13:55:47 +01:00
nvmem: NXP LPC18xx EEPROM memory NVMEM driver This commit adds support for NXP LPC18xx EEPROM memory found in NXP LPC185x/3x and LPC435x/3x/2x/1x devices. EEPROM size is 16384 bytes and it can be entirely read and written/erased with 1 word (4 bytes) granularity. The last page (128 bytes) contains the EEPROM initialization data and is not writable. Erase/program time is less than 3ms. The EEPROM device requires a ~1500 kHz clock (min 800 kHz, max 1600 kHz) that is generated dividing the system bus clock by the division factor, contained in the divider register (minus 1 encoded). EEPROM will be kept in Power Down mode except during read/write calls. Signed-off-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar> Acked-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-07 10:57:39 +00:00
nvmem: Fix build error of missing devm_ioremap_resource on UM The devres.o gets linked if HAS_IOMEM is present so on ARCH=um allyesconfig (COMPILE_TEST) failed on many files with: drivers/built-in.o: In function `mtk_thermal_probe': mtk_thermal.c:(.text+0x394618): undefined reference to `devm_ioremap_resource' The users of devm_ioremap_resource() which are compile-testable should depend on HAS_IOMEM. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-31 11:07:03 +01:00
nvmem: NXP LPC18xx EEPROM memory NVMEM driver This commit adds support for NXP LPC18xx EEPROM memory found in NXP LPC185x/3x and LPC435x/3x/2x/1x devices. EEPROM size is 16384 bytes and it can be entirely read and written/erased with 1 word (4 bytes) granularity. The last page (128 bytes) contains the EEPROM initialization data and is not writable. Erase/program time is less than 3ms. The EEPROM device requires a ~1500 kHz clock (min 800 kHz, max 1600 kHz) that is generated dividing the system bus clock by the division factor, contained in the divider register (minus 1 encoded). EEPROM will be kept in Power Down mode except during read/write calls. Signed-off-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar> Acked-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-07 10:57:39 +00:00
nvmem: add NXP LPC18xx OTP driver Add simple read only driver for the internal OTP (One Time Programmable) memory found on all NXP LPC18xx and LPC43xx devices. The OTP memory is split into 4 banks each with 4 32-bits word. Some of the banks contain predefined data while others are for general purpose and user programmable via the OTP API in ROM. Note that writing to the OTP memory is not yet supported. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Tested-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-10-31 14:45:16 +00:00
nvmem: add driver for ocotp in i.MX23 and i.MX28 This patch brings read-only support for the On-Chip OTP cells in the i.MX23 and i.MX28 processor. The driver implements the new NVMEM provider API. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Marek Vasut <marex@denx.de> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-30 13:56:27 +01:00
nvmem: Fix dependencies for !HAS_IOMEM archs Not every arch has io memory. So, unbreak the build by fixing the dependencies. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-22 11:23:44 +00:00
nvmem: add driver for ocotp in i.MX23 and i.MX28 This patch brings read-only support for the On-Chip OTP cells in the i.MX23 and i.MX28 processor. The driver implements the new NVMEM provider API. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Marek Vasut <marex@denx.de> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-30 13:56:27 +01:00
nvmem: mediatek: Add Mediatek EFUSE driver Add Mediatek EFUSE driver to access hardware data like thermal sensor calibration or HDMI impedance. Signed-off-by: Andrew-CT Chen <andrew-ct.chen@mediatek.com> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-07 10:58:11 +00:00
nvmem: Fix build error of missing devm_ioremap_resource on UM The devres.o gets linked if HAS_IOMEM is present so on ARCH=um allyesconfig (COMPILE_TEST) failed on many files with: drivers/built-in.o: In function `mtk_thermal_probe': mtk_thermal.c:(.text+0x394618): undefined reference to `devm_ioremap_resource' The users of devm_ioremap_resource() which are compile-testable should depend on HAS_IOMEM. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-31 11:07:03 +01:00
nvmem: mediatek: Add Mediatek EFUSE driver Add Mediatek EFUSE driver to access hardware data like thermal sensor calibration or HDMI impedance. Signed-off-by: Andrew-CT Chen <andrew-ct.chen@mediatek.com> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-07 10:58:11 +00:00
nvmem: qfprom: Add Qualcomm QFPROM support. This patch adds QFPROM support driver which is used by other drivers like thermal sensor and cpufreq. On MSM parts there are some efuses (called qfprom) these fuses store things like calibration data, speed bins.. etc. Drivers like cpufreq, thermal sensors would read out this data for configuring the driver. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Philipp Zabel <p.zabel@pengutronix.de> Tested-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-27 12:15:00 +01:00
nvmem: Fix dependencies for !HAS_IOMEM archs Not every arch has io memory. So, unbreak the build by fixing the dependencies. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-22 11:23:44 +00:00
nvmem: qfprom: Add Qualcomm QFPROM support. This patch adds QFPROM support driver which is used by other drivers like thermal sensor and cpufreq. On MSM parts there are some efuses (called qfprom) these fuses store things like calibration data, speed bins.. etc. Drivers like cpufreq, thermal sensors would read out this data for configuring the driver. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Philipp Zabel <p.zabel@pengutronix.de> Tested-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-27 12:15:00 +01:00
nvmem: Adding bindings for rockchip-efuse There are some SoC specified values store in eFuse, such as the cpu_leakage and cpu_version, this driver can expose these values to /sys base on nvmem. Signed-off-by: Caesar Wang <caesar.wang@rock-chips.com> Signed-off-by: ZhengShunQian <zhengsq@rock-chips.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-30 13:56:44 +01:00
nvmem: Fix dependencies for !HAS_IOMEM archs Not every arch has io memory. So, unbreak the build by fixing the dependencies. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-22 11:23:44 +00:00
nvmem: Adding bindings for rockchip-efuse There are some SoC specified values store in eFuse, such as the cpu_leakage and cpu_version, this driver can expose these values to /sys base on nvmem. Signed-off-by: Caesar Wang <caesar.wang@rock-chips.com> Signed-off-by: ZhengShunQian <zhengsq@rock-chips.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-30 13:56:44 +01:00
nvmem: Add the Broadcom OTP controller driver Add support for 32 and 64-bit versions of Broadcom's On-Chip OTP controller. These controllers are used on SoC's such as Cygnus and Stingray. Reviewed-by: Ray Jui <ray.jui@broadcom.com> Tested-by: Jonathan Richardson <jonathan.richardson@broadcom.com> Signed-off-by: Scott Branden <scott.branden@broadcom.com> Signed-off-by: Oza Pawandeep <oza@broadcom.com> Signed-off-by: Jonathan Richardson <jonathan.richardson@broadcom.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-10-31 14:45:19 +00:00
nvmem: sunxi: Move the SID driver to the nvmem framework Now that we have the nvmem framework, we can consolidate the common driver code. Move the driver to the framework, and hopefully, it will fix the sysfs file creation race. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> [srinivas.kandagatla: Moved to regmap based EEPROM framework] Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Tested-by: Philipp Zabel <p.zabel@pengutronix.de> Tested-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-27 12:17:09 +01:00
nvmem: uniphier: add UniPhier eFuse driver Add eFuse driver for Socionext UniPhier series SoC. Note that eFuse device is under soc-glue and this register implements as read only. Signed-off-by: Keiji Hayashibara <hayashibara.keiji@socionext.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-24 10:54:26 +01:00
nvmem: Add Vybrid OCOTP support The patch adds support for the On Chip One Time Programmable Peripheral (OCOTP) on the Vybrid platform. Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-30 13:54:59 +01:00
nvmem: Fix dependencies for !HAS_IOMEM archs Not every arch has io memory. So, unbreak the build by fixing the dependencies. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-22 11:23:44 +00:00
nvmem: Add Vybrid OCOTP support The patch adds support for the On Chip One Time Programmable Peripheral (OCOTP) on the Vybrid platform. Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-30 13:54:59 +01:00
nvmem: amlogic: Add Amlogic Meson EFUSE driver Add Amlogic EFUSE driver to access hardware data like ethernet address, serial number or IDs. Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Carlo Caione <carlo@endlessm.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2016-08-27 15:43:46 +02:00
nvmem: meson-efuse: indicate that this driver is only for Meson GX SoCs The current Amlogic Meson eFuse driver only supports the 64-bit SoCs (GXBB and newer). Older SoCs cannot be supported by the same driver because they do not use the meson secure monitor firmware to access the hardware. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-09 15:26:40 +02:00
nvmem: amlogic: Add Amlogic Meson EFUSE driver Add Amlogic EFUSE driver to access hardware data like ethernet address, serial number or IDs. Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Carlo Caione <carlo@endlessm.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2016-08-27 15:43:46 +02:00
nvmem: meson-efuse: indicate that this driver is only for Meson GX SoCs The current Amlogic Meson eFuse driver only supports the 64-bit SoCs (GXBB and newer). Older SoCs cannot be supported by the same driver because they do not use the meson secure monitor firmware to access the hardware. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-09 15:26:40 +02:00
nvmem: amlogic: Add Amlogic Meson EFUSE driver Add Amlogic EFUSE driver to access hardware data like ethernet address, serial number or IDs. Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Carlo Caione <carlo@endlessm.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2016-08-27 15:43:46 +02:00
nvmem: add a driver for the Amlogic Meson6/Meson8/Meson8b SoCs This adds a driver to access the efuse on Amlogic Meson6, Meson8 and Meson8b SoCs. These SoCs are accessing the efuse IP block directly through the registers in the "secbus" region. This makes it different from the Meson GX efuse driver which uses the "secure monitor" firmware to access the efuse. The efuse on Meson6 can only read one byte at a time, while the efuse on Meson8 and Meson8b always reads 4 bytes at a time. The new driver supports both, but due to lack of hardware Meson6 support was not tested. The hardware also supports writing. However, this is currently not supported by the driver. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-09 15:26:41 +02:00
nvmem: add snvs_lpgpr driver This is a driver for Low Power General Purpose Register (LPGPR) available on i.MX6 SoCs in Secure Non-Volatile Storage (SNVS) of this chip. It is a 32-bit read/write register located in the low power domain. Since LPGPR is located in the battery-backed power domain, LPGPR can be used by any application for retaining data during an SoC power-down mode. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-17 12:33:43 +02:00
nvmem: qfprom: Add Qualcomm QFPROM support. This patch adds QFPROM support driver which is used by other drivers like thermal sensor and cpufreq. On MSM parts there are some efuses (called qfprom) these fuses store things like calibration data, speed bins.. etc. Drivers like cpufreq, thermal sensors would read out this data for configuring the driver. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Philipp Zabel <p.zabel@pengutronix.de> Tested-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-27 12:15:00 +01:00