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

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>
zero-colors
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);
}
/*