diff options
Diffstat (limited to 'recipes-kernel/linux/linux-omapl138-psp-2.6.37/0001-musb-update-PIO-mode-help-information-in-Kconfig.patch')
-rw-r--r-- | recipes-kernel/linux/linux-omapl138-psp-2.6.37/0001-musb-update-PIO-mode-help-information-in-Kconfig.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-omapl138-psp-2.6.37/0001-musb-update-PIO-mode-help-information-in-Kconfig.patch b/recipes-kernel/linux/linux-omapl138-psp-2.6.37/0001-musb-update-PIO-mode-help-information-in-Kconfig.patch new file mode 100644 index 00000000..ff1c430a --- /dev/null +++ b/recipes-kernel/linux/linux-omapl138-psp-2.6.37/0001-musb-update-PIO-mode-help-information-in-Kconfig.patch | |||
@@ -0,0 +1,44 @@ | |||
1 | From 10fbd32a96aedd644b6bf38888a2af64cc13a35f Mon Sep 17 00:00:00 2001 | ||
2 | From: Matt Porter <mporter@ti.com> | ||
3 | Date: Mon, 5 Dec 2011 15:29:35 -0600 | ||
4 | Subject: [PATCH] musb: update PIO mode help information in Kconfig | ||
5 | |||
6 | * Updated the Kconfig help information for the PIO mode for MUSB | ||
7 | to make it more clear to the customer when to select this option | ||
8 | and which devices currently have issues with this option. | ||
9 | * This is in accordance with the findings for CPPI4.1 DMA usage | ||
10 | for MUSB | ||
11 | |||
12 | Upstream-Status: Submitted | ||
13 | * Submitted to the PSP team using the lpr list | ||
14 | |||
15 | Signed-off-by: Matt Porter <mporter@ti.com> | ||
16 | Signed-off-by: Chase Maupin <Chase.Maupin@ti.com> | ||
17 | --- | ||
18 | drivers/usb/musb/Kconfig | 11 +++++++---- | ||
19 | 1 files changed, 7 insertions(+), 4 deletions(-) | ||
20 | |||
21 | diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig | ||
22 | index ee75cbc..d56f23d 100644 | ||
23 | --- a/drivers/usb/musb/Kconfig | ||
24 | +++ b/drivers/usb/musb/Kconfig | ||
25 | @@ -107,10 +107,13 @@ config MUSB_PIO_ONLY | ||
26 | All data is copied between memory and FIFO by the CPU. | ||
27 | DMA controllers are ignored. | ||
28 | |||
29 | - Do not select 'n' here unless DMA support for your SOC or board | ||
30 | - is unavailable (or unstable). When DMA is enabled at compile time, | ||
31 | - you can still disable it at run time using the "use_dma=n" module | ||
32 | - parameter. | ||
33 | + Select 'y' here if DMA support for your SOC or board | ||
34 | + is unavailable (or unstable). On CPPI 4.1 DMA based | ||
35 | + systems (AM335x, AM35x, and AM180x) DMA support is | ||
36 | + considered unstable and this option should be enabled | ||
37 | + in production. When DMA is enabled at compile time, | ||
38 | + you can still disable it at run time using the "use_dma=n" | ||
39 | + module parameter. | ||
40 | |||
41 | config USB_UX500_DMA_HW | ||
42 | select USB_UX500_DMA | ||
43 | -- | ||
44 | 1.7.0.4 | ||