7d5f1dbda1
Some patches were part of other linux-mainline kernel versions but are not anymore part of the current 4.19.76. Move 0001-Enable-uart3-for-NanoPi-Neo-Air-used-by-BT.patch in linux-mainline_4.19.76.bbappend to avoid error patching file arch/arm/boot/dts/sun8i-h3-nanopi-neo-air.dts Hunk #2 FAILED at 162. 1 out of 2 hunks FAILED -- rejects in file arch/arm/boot/dts/sun8i-h3-nanopi-neo-air.dts Place all patches from Armbian in a separate directory and do all the Balena specific operations in linux-mainline_%.bbappend only. Changelog-entry: Remove unused patches and cleanup Signed-off-by: Vicentiu Galanopulo <vicentiu@balena.io>
36 lines
1.5 KiB
Diff
36 lines
1.5 KiB
Diff
Increasing the SATA/AHCI DMA TX/RX FIFOs (P0DMACR.TXTS and .RXTS) from
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default 0x0 each to 0x3 each gives a write performance boost of 120MB/s
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from lame 36MB/s to 45MB/s previously. Read performance is about 200MB/s
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[tested on SSD using dd bs=4K count=512K].
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Tested on the Banana Pi R1 (aka Lamobo R1) and Banana Pi M1 SBCs
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with Allwinner A20 32bit-SoCs (ARMv7-a / arm-linux-gnueabihf).
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These devices are RaspberryPi-like small devices.
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RFC: Since more than about 25 similar SBC/SoC models do use the
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ahci_sunxi driver, users are encouraged to test it on all the
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affected boards and give feedback.
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List of the affected sunxi and other boards and SoCs with SATA using
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the ahci_sunxi driver:
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$ grep -i -e "^&ahci" arch/arm/boot/dts/sun*dts
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and http://linux-sunxi.org/Category:Devices_with_SATA_port
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Signed-off-by: Uenal Mutlu <um@mutluit.com>
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---
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drivers/ata/ahci_sunxi.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/ata/ahci_sunxi.c b/drivers/ata/ahci_sunxi.c
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index 911710643305..257986431c79 100644
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--- a/drivers/ata/ahci_sunxi.c
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+++ b/drivers/ata/ahci_sunxi.c
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@@ -158,7 +158,7 @@ static void ahci_sunxi_start_engine(struct ata_port *ap)
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struct ahci_host_priv *hpriv = ap->host->private_data;
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/* Setup DMA before DMA start */
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- sunxi_clrsetbits(hpriv->mmio + AHCI_P0DMACR, 0x0000ff00, 0x00004400);
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+ sunxi_clrsetbits(hpriv->mmio + AHCI_P0DMACR, 0x0000ffff, 0x00004433);
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/* Start DMA */
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sunxi_setbits(port_mmio + PORT_CMD, PORT_CMD_START);
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