From mboxrd@z Thu Jan 1 00:00:00 1970 From: sangwook.lee@linaro.org (Sangwook Lee) Date: Wed, 29 Feb 2012 14:27:54 +0000 Subject: [PATCH 1/2] ARM: EXYNOS: Add EHCI AHB burst function In-Reply-To: References: <1330519283-4722-1-git-send-email-sangwook.lee@linaro.org> <1330519283-4722-2-git-send-email-sangwook.lee@linaro.org> Message-ID: <4F4E35EA.8050605@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 29/02/12 13:01, Thomas Abraham wrote: > Hi Sangwook, > > On 29 February 2012 18:11, Sangwook Lee wrote: >> Enable burst transfer from AHB for EHCI. >> This fixes data transfer of USB Ethernet with EHCI. >> Without this patch, scp hardly works. >> >> Signed-off-by: Sangwook Lee >> --- >> arch/arm/mach-exynos/setup-usb-phy.c | 6 ++++++ >> arch/arm/plat-samsung/devs.c | 2 ++ >> arch/arm/plat-samsung/include/plat/ehci.h | 19 +++++++++++++++++++ >> 3 files changed, 27 insertions(+), 0 deletions(-) >> >> diff --git a/arch/arm/mach-exynos/setup-usb-phy.c b/arch/arm/mach-exynos/setup-usb-phy.c >> index 41743d2..5a20460 100644 >> --- a/arch/arm/mach-exynos/setup-usb-phy.c >> +++ b/arch/arm/mach-exynos/setup-usb-phy.c >> @@ -18,6 +18,7 @@ >> #include >> #include >> #include >> +#include >> >> static atomic_t host_usage; >> >> @@ -149,3 +150,8 @@ int s5p_usb_phy_exit(struct platform_device *pdev, int type) >> >> return -EINVAL; >> } >> + >> +void s5p_ehci_burst_enable(struct platform_device *pdev, void __iomem *base) >> +{ >> + writel(EHCI_INSNREG00_ENABLE_BURST, base + EHCI_INSNREG00); >> +} > > This functionality can be added in ehci-s5p itself and avoid adding a > new platform callback in platform data. If this is specific to exynos, > driver data could be added in ehci-s5p to indicate platforms that need > this to be enabled. it makes sense. > > Thanks, > Thomas. > > [...]