065936bc48
Since the Armbian sources refer to linux 4.19.76 as being linux-mainline, all the patches from linux-4.19 were moved to linux-mainline_4.19 and the linux_4.19.76 recipes was named accordingly. This patch makes 4.19.76 as default version for linux 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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