BCM63xx SPI controller is a bit tricky since it doesn't allow keeping CS active between transfers, so I had to modify the spi_flash driver in order to allow limiting reads.
v6: Introduce changes suggested by Jagan Teki: - Use cmd instead of val to avoid confusions. - Switch to wait_for_bit instead of infinite loop. v5: Introduce changes suggested by Jagan Teki: - Use long structs for registers v4: Introduce changes suggested by Jagan Teki: - Add data for each HW controller instead of having two separate configs. v3: Fix bug introduced in v2: sizeof(cmd) vs len. Also rename BCM6338 SPI driver to BCM6348 SPI since BCM6338 is a stripped down version of the BCM6348. Switch to devfdt_get_addr_size_index(). v2: Introduce changes requested by Simon Glass: - Always include command bytes when determining max write size. Also move SPI aliases from .dts to .dtsi files.
Álvaro Fernández Rojas (11): wait_bit: add big endian version of wait_for_bit function drivers: spi: allow limiting reads drivers: spi: consider command bytes when sending transfers dm: spi: add BCM63xx SPI driver mips: bmips: add bcm63xx-spi driver support for BCM6338 mips: bmips: add bcm63xx-spi driver support for BCM6348 mips: bmips: add bcm63xx-spi driver support for BCM6358 mips: bmips: add bcm63xx-spi driver support for BCM3380 mips: bmips: add bcm63xx-spi driver support for BCM63268 mips: bmips: enable the SPI flash on the Sagem F@ST1704 mips: bmips: enable the SPI flash on the Netgear CG3100D
arch/mips/dts/brcm,bcm3380.dtsi | 17 ++ arch/mips/dts/brcm,bcm63268.dtsi | 17 ++ arch/mips/dts/brcm,bcm6338.dtsi | 17 ++ arch/mips/dts/brcm,bcm6348.dtsi | 17 ++ arch/mips/dts/brcm,bcm6358.dtsi | 17 ++ arch/mips/dts/netgear,cg3100d.dts | 12 + arch/mips/dts/sagem,f@st1704.dts | 12 + configs/netgear_cg3100d_ram_defconfig | 8 + configs/sagem_f@st1704_ram_defconfig | 8 + drivers/mtd/spi/spi_flash.c | 5 +- drivers/spi/Kconfig | 8 + drivers/spi/Makefile | 1 + drivers/spi/bcm63xx_spi.c | 433 ++++++++++++++++++++++++++++++++++ include/spi.h | 5 +- include/wait_bit.h | 44 ++++ 15 files changed, 619 insertions(+), 2 deletions(-) create mode 100644 drivers/spi/bcm63xx_spi.c