The patch spi: atmel: Remove and fix erroneous comments has been applied to the spi tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-5.5 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark >From 4d8672d17450b457c0dbbcfe9868438036b4647c Mon Sep 17 00:00:00 2001 From: Gregory CLEMENT <gregory.clement@xxxxxxxxxxx> Date: Thu, 17 Oct 2019 16:18:40 +0200 Subject: [PATCH] spi: atmel: Remove and fix erroneous comments Since CSAAT functionality support has been added. Some comments become wrong. Fix them to match the current driver behavior. Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxx> Link: https://lore.kernel.org/r/20191017141846.7523-2-gregory.clement@xxxxxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> --- drivers/spi/spi-atmel.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c index e34ab587b980..7a17c3e2a8ee 100644 --- a/drivers/spi/spi-atmel.c +++ b/drivers/spi/spi-atmel.c @@ -312,11 +312,9 @@ static bool atmel_spi_is_v2(struct atmel_spi *as) * transmitted") Not so! Workaround uses nCSx pins as GPIOs; or newer * controllers have CSAAT and friends. * - * Since the CSAAT functionality is a bit weird on newer controllers as - * well, we use GPIO to control nCSx pins on all controllers, updating - * MR.PCS to avoid confusing the controller. Using GPIOs also lets us - * support active-high chipselects despite the controller's belief that - * only active-low devices/systems exists. + * Even controller newer than ar91rm9200, using GPIOs can make sens as + * it lets us support active-high chipselects despite the controller's + * belief that only active-low devices/systems exists. * * However, at91rm9200 has a second erratum whereby nCS0 doesn't work * right when driven with GPIO. ("Mode Fault does not allow more than one @@ -1193,8 +1191,6 @@ static int atmel_spi_setup(struct spi_device *spi) if (!as->use_cs_gpios) csr |= SPI_BIT(CSAAT); - /* DLYBS is mostly irrelevant since we manage chipselect using GPIOs. - */ csr |= SPI_BF(DLYBS, 0); word_delay_csr = atmel_word_delay_csr(spi, as); -- 2.20.1