diff options
| author | Ye.Li <B37916@freescale.com> | 2014-10-30 18:53:49 +0800 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2014-11-03 11:21:49 +0100 |
| commit | 8fe280f330ddfd4a9e395ca15ab4019a1a32aa1f (patch) | |
| tree | b735eb181cdc6c6e38c2ff52d3348719ce1d879d /arch/arm | |
| parent | 36255d67790b5a4f086e2c157ecea2455df0b7ce (diff) | |
| download | u-boot-imx-8fe280f330ddfd4a9e395ca15ab4019a1a32aa1f.zip u-boot-imx-8fe280f330ddfd4a9e395ca15ab4019a1a32aa1f.tar.gz u-boot-imx-8fe280f330ddfd4a9e395ca15ab4019a1a32aa1f.tar.bz2 | |
imx: mx6 sabreauto: Add board support for USB EHCI
On mx6 sabreauto board, there are two USB ports:
0: OTG
1: HOST
The EHCI driver is enabled for this board, but the IOMUX and VBUS power
control is not implemented, which cause both USB port failed to work.
This patch fix the problem by adding the board support codes.
Since the power control uses the GPIO pin from port expander MAX7310,
the PCA953X driver is enabled for accessing the MAX7310.
The ID pin of OTG Port needs to configure the GPR1 bit 13 for selecting
its daisy chain. Add a new function "imx_iomux_set_gpr_register" to
handle GPR register setting.
Signed-off-by: Ye.Li <B37916@freescale.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/imx-common/iomux-v3.c | 15 | ||||
| -rw-r--r-- | arch/arm/include/asm/imx-common/iomux-v3.h | 5 |
2 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/imx-common/iomux-v3.c b/arch/arm/imx-common/iomux-v3.c index 22cd11a..e88e6e2 100644 --- a/arch/arm/imx-common/iomux-v3.c +++ b/arch/arm/imx-common/iomux-v3.c @@ -77,3 +77,18 @@ void imx_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t const *pad_list, p += stride; } } + +void imx_iomux_set_gpr_register(int group, int start_bit, + int num_bits, int value) +{ + int i = 0; + u32 reg; + reg = readl(base + group * 4); + while (num_bits) { + reg &= ~(1<<(start_bit + i)); + i++; + num_bits--; + } + reg |= (value << start_bit); + writel(reg, base + group * 4); +} diff --git a/arch/arm/include/asm/imx-common/iomux-v3.h b/arch/arm/include/asm/imx-common/iomux-v3.h index a8ca49c..e0a49be 100644 --- a/arch/arm/include/asm/imx-common/iomux-v3.h +++ b/arch/arm/include/asm/imx-common/iomux-v3.h @@ -182,6 +182,11 @@ typedef u64 iomux_v3_cfg_t; void imx_iomux_v3_setup_pad(iomux_v3_cfg_t pad); void imx_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t const *pad_list, unsigned count); +/* +* Set bits for general purpose registers +*/ +void imx_iomux_set_gpr_register(int group, int start_bit, + int num_bits, int value); /* macros for declaring and using pinmux array */ #if defined(CONFIG_MX6QDL) |