Messages in this thread Patch in this message |  | | From | Herve Codina <> | Subject | [PATCH 3/4] mtd: rawnand: fsmc: Take instruction delay into account | Date | Fri, 12 Nov 2021 15:38:54 +0100 |
| |
The FSMC nand controller should apply a delay after the instruction has been issued on the bus. The FSMC nand controller driver did not handle this delay.
This patch adds this waiting delay in the FSMC nand controller driver.
Signed-off-by: Herve Codina <herve.codina@bootlin.com> --- drivers/mtd/nand/raw/fsmc_nand.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c index 7f057cfee6c4..bff09219ce3a 100644 --- a/drivers/mtd/nand/raw/fsmc_nand.c +++ b/drivers/mtd/nand/raw/fsmc_nand.c @@ -15,6 +15,7 @@ #include <linux/clk.h> #include <linux/completion.h> +#include <linux/delay.h> #include <linux/dmaengine.h> #include <linux/dma-direction.h> #include <linux/dma-mapping.h> @@ -667,6 +668,9 @@ static int fsmc_exec_op(struct nand_chip *chip, const struct nand_operation *op, instr->ctx.waitrdy.timeout_ms); break; } + + if (instr->delay_ns) + ndelay(instr->delay_ns); } return ret; -- 2.31.1
|  |