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path: root/drivers/memory/pl172.c
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2021-02-02amba: Make the remove callback return voidUwe Kleine-König
All amba drivers return 0 in their remove callback. Together with the driver core ignoring the return value anyhow, it doesn't make sense to return a value here. Change the remove prototype to return void, which makes it explicit that returning an error value doesn't work as expected. This simplifies changing the core remove callback to return void, too. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> # for hwtracing/coresight Acked-By: Vinod Koul <vkoul@kernel.org> # for dmaengine Acked-by: Guenter Roeck <linux@roeck-us.net> # for watchdog Acked-by: Wolfram Sang <wsa@kernel.org> # for I2C Acked-by: Takashi Iwai <tiwai@suse.de> # for sound Acked-by: Vladimir Zapolskiy <vz@mleia.com> # for memory/pl172 Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210126165835.687514-5-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2020-07-27memory: pl172: Enclose macro argument usage in parenthesisKrzysztof Kozlowski
Macros arguments should be enclosed by parenthesis for safety. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-07-24memory: pl172: Add GPLv2 SPDX license headerKrzysztof Kozlowski
Add GPLv2 license header and remove GPL boiler plate text. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2015-09-29memory: pl172: add ARM PrimeCell PL176 MPMC supportVladimir Zapolskiy
The change adds support of ARM PrimeCell PL176 MPMC. Static memory configuration of PL175 MPMC is very similar to one found on PL172 and PL175 controllers, so it is preferred to add its support into the existing driver. The difference is that PL176 supports up to 10 slave ports (but only 4 of them may be connected to static memory devices), AHB master bus width cab be 64-bit wide, also NAND devices can be interfaced. Similar to PL175 contoller, PL176 has no write buffer enable control in static memory configuration register, the rest of static memory configuration bits (with exception of NAND) is the same. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Joachim Eastwood <manabian@gmail.com>
2015-09-29memory: pl172: add ARM PrimeCell PL175 MPMC supportVladimir Zapolskiy
The change adds support of ARM PrimeCell PL175 MPMC, the controller is found on NXP LPC32xx SoC. PL175 MPMC is very similar to PL172 controller, so it is preferred to add its support into the existing driver. One of the differences between PL172 and PL175 is that the latter one supports up to 6 AHB ports, but still only 4 AHB ports can be assigned to a static memory device, also PL175 does not have write buffer enable control in static memory configuration register. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Joachim Eastwood <manabian@gmail.com>
2015-09-29memory: pl172: correct MPMC peripheral ID register bitsVladimir Zapolskiy
According to PL172 TRM read of bits [7:6] of MPMCPeriphID3 is undefined, so unmask them. Also the driver supports all currently present revisions of PL172, this allows to alleviate requirements to the revision version matched by the driver. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Joachim Eastwood <manabian@gmail.com>
2015-07-22memory: pl172: fix modular buildJoachim Eastwood
Building pl172 as a module fails with: > ERROR: "of_default_bus_match_table" [drivers/memory/pl172.ko] undefined! Because the symbol of_default_bus_match_table isn't exported by the OF core code so can't be referenced from modules. Fix this by removing the usage of of_default_bus_match_table for now. The side effect of this is that child nodes can't use "simple-bus" or "simple-mfd". Reported-by: Mark Brown <broonie@kernel.org> Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2015-07-17memory: add ARM PL172 MultiPort Memory Controller driverJoachim Eastwood
This driver makes it possible to configure the static memory chip selects on the ARM PL172 MultiPort Memory Controller from a set of properties in DT. Configuration of dynamic memory is not supported and is left to the boot loader. The intended usage is to setup timing and configuration for static memory devices like NAND and NOR Flash before they are probed by a driver. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Olof Johansson <olof@lixom.net>