From 9e54eae23bc9cca0d8a955018c35b1250e09a73a Mon Sep 17 00:00:00 2001 From: Richard Zhu Date: Wed, 24 Jul 2013 14:15:29 +0800 Subject: ahci_imx: add ahci sata support on imx platforms imx6q contains one Synopsys AHCI SATA controller, But it can't share ahci_platform driver with other controllers because there are some misalignments of the generic AHCI controller - the bits definitions of the HBA registers, the Vendor Specific registers, the AHCI PHY clock and the AHCI signals adjustment window(GPR13 register). - CAP_SSS(bit20) of the HOST_CAP is writable, default value is '0', should be configured to be '1' - bit0 (only one AHCI SATA port on imx6q) of the HOST_PORTS_IMPL should be set to be '1'.(default 0) - One Vendor Specific register HOST_TIMER1MS(offset:0xe0) should be configured regarding to the frequency of AHB bus clock. - Configurations of the AHCI PHY clock, and the signal parameters of the GPR13 Setup its own ahci sata driver, contained the imx6q specific initialized codes, re-use the generic ahci_platform driver, and keep the generic ahci_platform driver clean as much as possible. tj: patch description reformatted Signed-off-by: Richard Zhu Reviewed-by: Shawn Guo Signed-off-by: Tejun Heo --- drivers/ata/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/ata/Kconfig') diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index 5cddaf86cd0a..a4af0a2a089c 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -97,6 +97,15 @@ config SATA_AHCI_PLATFORM If unsure, say N. +config AHCI_IMX + tristate "Freescale i.MX AHCI SATA support" + depends on SATA_AHCI_PLATFORM + help + This option enables support for the Freescale i.MX SoC's + onboard AHCI SATA. + + If unsure, say N. + config SATA_FSL tristate "Freescale 3.0Gbps SATA support" depends on FSL_SOC -- cgit v1.2.2