150ac0c2af
AR-1 - Adding support category for distributions AR-4 - Remove Allwinner legacy AR-5 - Drop Udoo family and move Udoo board into newly created imx6 family AR-9 - Rename sunxi-next to sunxi-legacy AR-10 - Rename sunxi-dev to sunxi-current AR-11 - Adding Radxa Rockpi S support AR-13 - Rename rockchip64-default to rockchip64-legacy AR-14 - Add rockchip64-current as mainline source AR-15 - Drop Rockchip 4.19.y NEXT, current become 5.3.y AR-16 - Rename RK3399 default to legacy AR-17 - Rename Odroid XU4 next and default to legacy 4.14.y, add DEV 5.4.y AR-18 - Add Odroid N2 current mainline AR-19 - Move Odroid C1 to meson family AR-20 - Rename mvebu64-default to mvebu64-legacy AR-21 - Rename mvebu-default to mvebu-legacy AR-22 - Rename mvebu-next to mvebu-current AR-23 - Drop meson64 default and next, current becomes former DEV 5.3.y AR-24 - Drop cubox family and move Cubox/Hummingboard boards under imx6 AR-26 - Adjust motd AR-27 - Enabling distribution release status AR-28 - Added new GCC compilers AR-29 - Implementing Ubuntu Eoan AR-30 - Add desktop packages per board or family AR-31 - Remove (Ubuntu/Debian) distribution name from image filename AR-32 - Move arch configs from configuration.sh to separate arm64 and armhf config files AR-33 - Revision numbers for beta builds changed to day_in_the_year AR-34 - Patches support linked patches AR-35 - Break meson64 family into gxbb and gxl AR-36 - Add Nanopineo2 Black AR-38 - Upgrade option from old branches to new one via armbian-config AR-41 - Show full timezone info AR-43 - Merge Odroid N2 to meson64 AR-44 - Enable FORCE_BOOTSCRIPT_UPDATE for all builds
37 lines
1.5 KiB
Diff
37 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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