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mtd: spi-nor: aspeed: set 4B setting for all chips

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The driver made the wrong assumption that the 4B setting was
autodetected for all chips of the AST2500 FMC flash controller. This
is only the case for the CS0.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
This commit is contained in:
Cédric Le Goater 2017-08-02 10:51:51 +02:00 committed by Cyrille Pitchen
parent eb353aaa7c
commit 811cb89756
1 changed files with 6 additions and 7 deletions
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13
drivers/mtd/spi-nor/aspeed-smc.c
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@ -621,19 +621,18 @@ static void aspeed_smc_chip_set_type(struct aspeed_smc_chip *chip, int type)
}
/*
* The AST2500 FMC flash controller should be strapped by hardware, or
* autodetected, but the AST2500 SPI flash needs to be set.
* The first chip of the AST2500 FMC flash controller is strapped by
* hardware, or autodetected, but other chips need to be set. Enforce
* the 4B setting for all chips.
*/
static void aspeed_smc_chip_set_4b(struct aspeed_smc_chip *chip)
{
struct aspeed_smc_controller *controller = chip->controller;
u32 reg;
if (chip->controller->info == &spi_2500_info) {
reg = readl(controller->regs + CE_CONTROL_REG);
reg |= 1 << chip->cs;
writel(reg, controller->regs + CE_CONTROL_REG);
}
reg = readl(controller->regs + CE_CONTROL_REG);
reg |= 1 << chip->cs;
writel(reg, controller->regs + CE_CONTROL_REG);
}
/*