Re: [PATCH v5 13/15] MIPS: JZ4770: Workaround for corrupted DMA transfers

2018-01-05 Thread Paul Cercueil
Hi, Hi, [...] +/* + * We have seen MMC DMA transfers read corrupted data from SDRAM when a burst + * interval ends at physical address 0x1000. To avoid this problem, we + * remove the final page of low memory from the memory map. + */ +void __init

Re: [PATCH v5 13/15] MIPS: JZ4770: Workaround for corrupted DMA transfers

2018-01-05 Thread Paul Cercueil
Hi, Hi, [...] +/* + * We have seen MMC DMA transfers read corrupted data from SDRAM when a burst + * interval ends at physical address 0x1000. To avoid this problem, we + * remove the final page of low memory from the memory map. + */ +void __init

Re: [PATCH v5 13/15] MIPS: JZ4770: Workaround for corrupted DMA transfers

2018-01-02 Thread PrasannaKumar Muralidharan
Hi Paul, On 2 January 2018 at 20:38, Paul Cercueil wrote: > From: Maarten ter Huurne > > We have seen MMC DMA transfers read corrupted data from SDRAM when > a burst interval ends at physical address 0x1000. To avoid this > problem, we remove

Re: [PATCH v5 13/15] MIPS: JZ4770: Workaround for corrupted DMA transfers

2018-01-02 Thread PrasannaKumar Muralidharan
Hi Paul, On 2 January 2018 at 20:38, Paul Cercueil wrote: > From: Maarten ter Huurne > > We have seen MMC DMA transfers read corrupted data from SDRAM when > a burst interval ends at physical address 0x1000. To avoid this > problem, we remove the final page of low memory from the memory

[PATCH v5 13/15] MIPS: JZ4770: Workaround for corrupted DMA transfers

2018-01-02 Thread Paul Cercueil
From: Maarten ter Huurne We have seen MMC DMA transfers read corrupted data from SDRAM when a burst interval ends at physical address 0x1000. To avoid this problem, we remove the final page of low memory from the memory map. Signed-off-by: Maarten ter Huurne

[PATCH v5 13/15] MIPS: JZ4770: Workaround for corrupted DMA transfers

2018-01-02 Thread Paul Cercueil
From: Maarten ter Huurne We have seen MMC DMA transfers read corrupted data from SDRAM when a burst interval ends at physical address 0x1000. To avoid this problem, we remove the final page of low memory from the memory map. Signed-off-by: Maarten ter Huurne --- arch/mips/jz4740/setup.c |