This patch adds driver for Cadence's XSPI controller.
It supports 3 work modes.
1. ACMD (auto command) work mode
ACMD name is because it uses auto command engine in the controller.
It further has 2 modes PIO and CDMA (command DMA).
The CDMA work mode is dedicated for high-performance application
where very low software overhead is required. In this mode the
Command Engine is programmed by the series of linked descriptors
stored in system memory. These descriptors provide commands to execute
and store status information for finished commands.
The PIO mode work mode is dedicated for single operation where
constructing a linked list of descriptors would require too
much effort.
2. STIG (Software Triggered Instruction Generator) work mode
In STIG mode, controller sends low-level instructions to memory.
Each instruction is 128-bit width. There is special instruction
DataSequence which carries information about data phase.
Driver uses Slave DMA interface to transfer data as only this
interface can be used in STIG work mode.
3. Direct work mode
This work mode allows sending data without invoking any command through
the slave interface.
Currently only STIG work mode is enabled, remaining work modes will
be added later.
Signed-off-by: Konrad Kociolek <konrad@cadence.com>
Signed-off-by: Jayshri Pawar <jpawar@cadence.com>
Signed-off-by: Parshuram Thombare <pthombar@cadence.com>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/1632038734-23999-1-git-send-email-pthombar@cadence.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add a driver to support the SPI controller found in Ingenic SoCs. Co-developed-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Artur Rojek <contact@artur-rojek.eu> Link: https://lore.kernel.org/r/20210830230139.21476-3-contact@artur-rojek.eu Signed-off-by: Mark Brown <broonie@kernel.org>
Add the rockchip serial flash controller (SFC) driver. Signed-off-by: Chris Morgan <macromorgan@hotmail.com> Signed-off-by: Jon Lin <jon.lin@rock-chips.com> Tested-by: Peter Geis <pgwipeout@gmail.com> Tested-by: Chris Morgan <macromorgan@hotmail.com> Link: https://lore.kernel.org/r/20210812134546.31340-3-jon.lin@rock-chips.com Signed-off-by: Mark Brown <broonie@kernel.org>
This patch adds a Device Feature List (DFL) bus driver for the Altera SPI Master controller. The SPI master is connected to an Intel SPI Slave to Avalon Bridge inside an Intel MAX10 BMC Chip. Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com> Link: https://lore.kernel.org/r/20210416165720.554144-3-matthew.gerlach@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
In preparation of adding support for a new bus type, separate the core spi-altera code from the platform driver code. Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com> Link: https://lore.kernel.org/r/20210416165720.554144-2-matthew.gerlach@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
This driver supports SPI Controller for HiSilicon Kunpeng SoCs. This driver supports SPI operations using FIFO mode of transfer. DMA is not supported, and we just use IRQ mode for operation completion notification. Only ACPI firmware is supported. Signed-off-by: Jay Fang <f.fangjian@huawei.com> Link: https://lore.kernel.org/r/1616836200-45827-1-git-send-email-f.fangjian@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
This driver likely also supports earlier (RTL8196) and later (RTL93xx) SoCs. The SPI hardware in these SoCs is specifically intended for connecting NOR bootflash chips, and only used for that in dozens of examined devices. However boiled down to basics, it's really just a half-duplex SPI controller. The hardware appears to have a vestigial second chip-select control, but it hasn't been seen in the wild and is thus not supported. Signed-off-by: Bert Vermeulen <bert@biot.com> Link: https://lore.kernel.org/r/20210120135928.246054-3-bert@biot.com Signed-off-by: Mark Brown <broonie@kernel.org>
The CSR SiRF prima2/atlas platforms are getting removed, so this driver is no longer needed. Cc: Barry Song <baohua@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Barry Song <baohua@kernel.org> Link: https://lore.kernel.org/r/20210120161658.3820610-1-arnd@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
Uwe Kleine-König <uwe.kleine-koenig@pengutronix.de>: From: Uwe Kleine-König <uwe.kleine-koenig@pengutronix.de> Hello, there are no known active users of the efm32 platform. Given that the only machine that is supported has only 4 MiB of RAM its use is also quite limited. Back then it served as the platform to develop ARMv7-M support in Linux which was quite fun and still is a blissful memory. Still given that the code serves no purpose and this probably won't change anytime soon, remove all platform support. I'm unsure what to do with the device tree bindings. Should we delete them, too? Best regards Uwe Uwe Kleine-König (7): ARM: drop efm32 platform clk: Drop unused efm32gg driver clocksource: Drop unused efm32 timer code spi: Drop unused efm32 bus driver i2c: Drop unused efm32 bus driver tty: Drop unused efm32 serial driver MAINTAINERS: Remove deleted platform efm32 MAINTAINERS | 7 - arch/arm/Kconfig | 10 +- arch/arm/Kconfig.debug | 17 - arch/arm/Makefile | 1 - arch/arm/boot/dts/Makefile | 2 - arch/arm/boot/dts/efm32gg-dk3750.dts | 88 --- arch/arm/boot/dts/efm32gg.dtsi | 177 ----- arch/arm/configs/efm32_defconfig | 98 --- arch/arm/include/debug/efm32.S | 45 -- arch/arm/mach-efm32/Makefile | 2 - arch/arm/mach-efm32/Makefile.boot | 4 - arch/arm/mach-efm32/dtmachine.c | 16 - arch/arm/mm/Kconfig | 1 - drivers/clk/Makefile | 1 - drivers/clk/clk-efm32gg.c | 84 --- drivers/clocksource/Kconfig | 9 - drivers/clocksource/Makefile | 1 - drivers/clocksource/timer-efm32.c | 278 -------- drivers/i2c/busses/Kconfig | 7 - drivers/i2c/busses/Makefile | 1 - drivers/i2c/busses/i2c-efm32.c | 469 ------------- drivers/spi/Kconfig | 7 - drivers/spi/Makefile | 1 - drivers/spi/spi-efm32.c | 462 ------------ drivers/tty/serial/Kconfig | 13 - drivers/tty/serial/Makefile | 1 - drivers/tty/serial/efm32-uart.c | 852 ----------------------- include/linux/platform_data/efm32-spi.h | 15 - include/linux/platform_data/efm32-uart.h | 19 - include/uapi/linux/serial_core.h | 3 - 30 files changed, 1 insertion(+), 2690 deletions(-) delete mode 100644 arch/arm/boot/dts/efm32gg-dk3750.dts delete mode 100644 arch/arm/boot/dts/efm32gg.dtsi delete mode 100644 arch/arm/configs/efm32_defconfig delete mode 100644 arch/arm/include/debug/efm32.S delete mode 100644 arch/arm/mach-efm32/Makefile delete mode 100644 arch/arm/mach-efm32/Makefile.boot delete mode 100644 arch/arm/mach-efm32/dtmachine.c delete mode 100644 drivers/clk/clk-efm32gg.c delete mode 100644 drivers/clocksource/timer-efm32.c delete mode 100644 drivers/i2c/busses/i2c-efm32.c delete mode 100644 drivers/spi/spi-efm32.c delete mode 100644 drivers/tty/serial/efm32-uart.c delete mode 100644 include/linux/platform_data/efm32-spi.h delete mode 100644 include/linux/platform_data/efm32-uart.h base-commit: 5c8fe583cce542aa0b84adc939ce85293de36e5e -- 2.29.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Support for this machine was just removed, so drop the now unused spi bus driver, too. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20210114151630.128830-5-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>