Hi Christophe, Christophe Kerello <christophe.kerello@xxxxxx> wrote on Thu, 29 Nov 2018 17:41:02 +0100: > The driver adds the support for the STMicroelectronics FMC2 NAND > Controller found on STM32MP SOCs. > > This patch is based on FMC2 command sequencer. > The purpose of the command sequencer is to facilitate the programming > and the reading of NAND flash pages with the ECC and to free the CPU > of sequencing tasks. > It requires one DMA channel for write and two DMA channels for read > operations. > > Only NAND_ECC_HW mode is actually supported. > The driver supports a maximum 8k page size. > The following ECC strength and step size are currently supported: > - nand-ecc-strength = <8>, nand-ecc-step-size = <512> (BCH8) > - nand-ecc-strength = <4>, nand-ecc-step-size = <512> (BCH4) > - nand-ecc-strength = <1>, nand-ecc-step-size = <512> (Extended ECC > based on Hamming) > > This patch has been tested on Micron MT29F8G08ABACAH4 and > MT29F8G16ABACAH4 > > Signed-off-by: Christophe Kerello <christophe.kerello@xxxxxx> > --- The driver look's good to me. However, Boris contributed new cleanups that I would like you to take into account before doing another 'deep' review. Please rebase on top of nand/next and have a look at the followingcommits. For the ->select_chip() hook, it should not be exposed anymore and switches should be handled locally by the driver (you have examples). 7a08dbaedd36 mtd: rawnand: Move ->setup_data_interface() to nand_controller_ops f2abfeb2078b mtd: rawnand: Move the ->exec_op() method to nand_controller_ops 7d6c37e90cf9 mtd: rawnand: Deprecate the ->select_chip() hook 1770022ffa85 mtd: rawnand: ams-delta: Stop implementing ->select_chip() 653c57c7da08 mtd: rawnand: vf610: Stop implementing ->select_chip() 2ace451cae22 mtd: rawnand: tegra: Stop implementing ->select_chip() b25251414f6e mtd: rawnand: marvell: Stop implementing ->select_chip() 550b9fc4e3af mtd: rawnand: fsmc: Stop implementing ->select_chip() 02b4a52604a4 mtd: rawnand: Make ->select_chip() optional when ->exec_op() is implemented ae2294b10b0f mtd: rawnand: Pass the CS line to be selected in struct nand_operation 1d0178593d14 mtd: rawnand: Add nand_[de]select_target() helpers While at it, could you also address Linus W. comments. Thanks, Miquèl
