Commit b9465b04 authored by Olivier Sobrie's avatar Olivier Sobrie Committed by Miquel Raynal
Browse files

mtd: rawnand: pl353: make sure optimal timings are applied 



Timings of the nand are adjusted by pl35x_nfc_setup_interface() but
actually applied by the pl35x_nand_select_target() function.
If there is only one nand chip, the pl35x_nand_select_target() will only
apply the timings once since the test at its beginning will always be true
after the first call to this function. As a result, the hardware will
keep using the default timings set at boot to detect the nand chip, not
the optimal ones.

With this patch, we program directly the new timings when
pl35x_nfc_setup_interface() is called.

Fixes: 08d8c621 ("mtd: rawnand: pl353: Add support for the ARM PL353 SMC NAND controller")
Signed-off-by: default avatarOlivier Sobrie <olivier@sobrie.be>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
parent 16dec014

drivers/mtd/nand/raw/pl35x-nand-controller.c

+3 −0
Original line number Diff line number Diff line
@@ -862,6 +862,9 @@ static int pl35x_nfc_setup_interface(struct nand_chip *chip, int cs, 
			  PL35X_SMC_NAND_TAR_CYCLES(tmgs.t_ar) |

			  PL35X_SMC_NAND_TRR_CYCLES(tmgs.t_rr);



	writel(plnand->timings, nfc->conf_regs + PL35X_SMC_CYCLES);

	pl35x_smc_update_regs(nfc);



	return 0;

}