On Wednesday 06 November 2013 10:11 PM, Vaibhav Bedia wrote: > On Wed, Nov 6, 2013 at 8:32 AM, Lokesh Vutla <lokeshvu...@ti.com> wrote: >> On Wednesday 06 November 2013 06:13 PM, Vaibhav Bedia wrote: >>> On Mon, Nov 4, 2013 at 11:20 PM, Lokesh Vutla <lokeshvu...@ti.com> wrote: >>>> Updating the mux data for UART, and adding data for i2c0 and mmc. >>>> >>>> Signed-off-by: Lokesh Vutla <lokeshvu...@ti.com> >>>> --- >>>> arch/arm/include/asm/arch-am33xx/mux_am43xx.h | 4 +++- >>>> board/ti/am43xx/mux.c | 24 >>>> ++++++++++++++++++++++-- >>>> 2 files changed, 25 insertions(+), 3 deletions(-) >>>> >>>> diff --git a/arch/arm/include/asm/arch-am33xx/mux_am43xx.h >>>> b/arch/arm/include/asm/arch-am33xx/mux_am43xx.h >>>> index 0206912..e95efdd 100644 >>>> --- a/arch/arm/include/asm/arch-am33xx/mux_am43xx.h >>>> +++ b/arch/arm/include/asm/arch-am33xx/mux_am43xx.h >>>> @@ -16,7 +16,9 @@ >>>> __raw_writel(value, (CTRL_BASE + offset)); >>>> >>>> /* PAD Control Fields */ >>>> -#define SLEWCTRL (0x1 << 19) >>>> +#define DSPULLUDEN (0x1 << 27) /* DS0 mode Pull-Up/Down enable */ >>>> +#define DSPULLUDDIS (0x0 << 27) /* DS0 mode Pull-Up/Down Disable */ >>>> +#define SLEWCTRL (0x1 << 19) /* Slow slew rate selection */ >>>> #define RXACTIVE (0x1 << 18) >>>> #define PULLDOWN_EN (0x0 << 17) /* Pull Down Selection */ >>>> #define PULLUP_EN (0x1 << 17) /* Pull Up Selection */ >>>> diff --git a/board/ti/am43xx/mux.c b/board/ti/am43xx/mux.c >>>> index 700e9a7..818a046 100644 >>>> --- a/board/ti/am43xx/mux.c >>>> +++ b/board/ti/am43xx/mux.c >>>> @@ -12,8 +12,26 @@ >>>> #include "board.h" >>>> >>>> static struct module_pin_mux uart0_pin_mux[] = { >>>> - {OFFSET(uart0_rxd), (MODE(0) | RXACTIVE)}, /* UART0_RXD */ >>>> - {OFFSET(uart0_txd), (MODE(0))}, /* UART0_TXD */ >>>> + {OFFSET(uart0_rxd), >>>> + (MODE(0) | PULLUP_EN | RXACTIVE | SLEWCTRL | DSPULLUDEN)}, >>>> + {OFFSET(uart0_txd), >>>> + (MODE(0) | PULLUDDIS | PULLUP_EN | SLEWCTRL | DSPULLUDEN)}, >>>> + {-1}, >>>> +}; >>>> + >>>> +static struct module_pin_mux mmc0_pin_mux[] = { >>>> + {OFFSET(mmc0_clk), (MODE(0) | PULLUDDIS | RXACTIVE | DSPULLUDEN)}, >>>> + {OFFSET(mmc0_cmd), (MODE(0) | PULLUP_EN | RXACTIVE | DSPULLUDEN)}, >>>> + {OFFSET(mmc0_dat0), (MODE(0) | PULLUP_EN | RXACTIVE | DSPULLUDEN)}, >>>> + {OFFSET(mmc0_dat1), (MODE(0) | PULLUP_EN | RXACTIVE | DSPULLUDEN)}, >>>> + {OFFSET(mmc0_dat2), (MODE(0) | PULLUP_EN | RXACTIVE | DSPULLUDEN)}, >>>> + {OFFSET(mmc0_dat3), (MODE(0) | PULLUP_EN | RXACTIVE | DSPULLUDEN)}, >>>> + {-1}, >>> >>> Hmm i don't think updating the DSPULL here is a good idea. Since not >>> all the pins >>> are used in U-Boot, this is just partially updating the pulls for the >>> low power state. >>> I would suggest leaving this bit for the kernel where things can be >>> updated without >>> updating the bootloader. >> These are the preferred settings given to me. >> Any way if kernel is updating it overwrites these settings, it shouldn't >> matter I guess..:) >> > It's better to clearly list down what configuration a particular > entity in the system is > responsible for. Doing partial updates her just makes issues harder to debug. Ok, Ill update..
Thanks and regards, Lokesh > > Regards, > Vaibhav > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot