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ARM: vf610: ddrmc: program Dummy DDRBYTE1/2

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The Vybrid reference manual VFXXXRM Rev. 0 10/2016 states in chapter
5.2.6.1 DUMMY PADS (DDR/QuadSPI) that those pads need to be programed
for correct operation of DDR. Assume the default DDR pin configuration
which seems to work well on a Colibri VF50.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
This commit is contained in:
Stefan Agner 2018-12-14 15:26:00 +01:00 committed by Stefano Babic
parent a1f2779f51
commit a95d444055
2 changed files with 4 additions and 0 deletions
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2
arch/arm/include/asm/arch-vf610/iomux-vf610.h
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@ -244,6 +244,8 @@ enum {
VF610_PAD_DDR_WE__DDR_WE_B = IOMUX_PAD(0x02d0, 0x02d0, 0, __NA_, 0, VF610_DDR_PAD_CTRL),
VF610_PAD_DDR_ODT1__DDR_ODT_0 = IOMUX_PAD(0x02d4, 0x02d4, 0, __NA_, 0, VF610_DDR_PAD_CTRL),
VF610_PAD_DDR_ODT0__DDR_ODT_1 = IOMUX_PAD(0x02d8, 0x02d8, 0, __NA_, 0, VF610_DDR_PAD_CTRL),
VF610_PAD_DDR_DDRBYTE1__DDR_DDRBYTE1 = IOMUX_PAD(0x02dc, 0x02dc, 0, __NA_, 0, VF610_DDR_PAD_CTRL),
VF610_PAD_DDR_DDRBYTE2__DDR_DDRBYTE2 = IOMUX_PAD(0x02e0, 0x02e0, 0, __NA_, 0, VF610_DDR_PAD_CTRL),
};
#endif /* __IOMUX_VF610_H__ */

2
arch/arm/mach-imx/ddrmc-vf610.c
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@ -61,6 +61,8 @@ void ddrmc_setup_iomux(const iomux_v3_cfg_t *pads, int pads_count)
VF610_PAD_DDR_WE__DDR_WE_B,
VF610_PAD_DDR_ODT1__DDR_ODT_0,
VF610_PAD_DDR_ODT0__DDR_ODT_1,
VF610_PAD_DDR_DDRBYTE1__DDR_DDRBYTE1,
VF610_PAD_DDR_DDRBYTE2__DDR_DDRBYTE2,
VF610_PAD_DDR_RESETB,
};