Re: [PATCH] [v5] net: emac: emac gigabit ethernet controller driver
From: Timur Tabi <hidden>
Date: 2016-06-20 17:41:23
Also in:
linux-arm-msm, netdev
From: Timur Tabi <hidden>
Date: 2016-06-20 17:41:23
Also in:
linux-arm-msm, netdev
Rob Herring wrote:
quoted
quoted
+ dma-ranges = <0 0 0xffffffff>;I believe dma-ranges is supposed to be in the bus (parent) node.
Maybe I'm just going to be perpetually confused by dma-ranges, but how can I specify that the emac has a different DMA range from another SOC device, if dma-ranges is in the parent node? The EMAC itself is capable of 64-bit DMA internally (I should have included a dma_set_mask call with DMA_BIT_MASK(64) in the driver). However, the platform typically limits this range. On FSM9900 and QDF2432, it's 32 bits. On the next server chip, it'll be the full 64 bits. I need some way to handle that. -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation collaborative project.