* Arend van Spriel <ar...@broadcom.com> [130719 03:43]: > On 07/18/2013 10:59 AM, Tony Lindgren wrote: > >Then for the SDIO with device tree, take a look at the following > >patches: > > > >[PATCH 0/3] WLAN support for omap4 when booted with devicetree > >http://comments.gmane.org/gmane.linux.ports.arm.omap/97522# > > I have been looking at the pandaboard patch in the series above and > I do have a question. Among other things the patch adds these dt > entries. > > + 0x108 0x118 /* sdmmc5_clk.sdmmc5_clk INPUT_PULLUP | > MODE0 */ > + 0x10a 0x118 /* sdmmc5_cmd.sdmmc5_cmd INPUT_PULLUP | > MODE0 */ > > If I look at the similar names in the deceased board-omap4panda.c: > > board-omap4panda.c: OMAP4_MUX(SDMMC5_CMD, OMAP_MUX_MODE0 | > OMAP_PIN_INPUT_PULLUP), > board-omap4panda.c: OMAP4_MUX(SDMMC5_CLK, OMAP_MUX_MODE0 | > OMAP_PIN_INPUT_PULLUP), > > and in mux44xx.h: > > mux44xx.h:#define OMAP4_CTRL_MODULE_PAD_SDMMC5_CLK_OFFSET 0x0148 > mux44xx.h:#define OMAP4_CTRL_MODULE_PAD_SDMMC5_CMD_OFFSET 0x014a > > So how did 0x0148 get 0x0108 in DT and 0x014a get 0x010a. There is > probably an explanation to it and it would help my understanding to > know where this difference comes from. Hope you can help me out > here.
That's pretty confusing I agree.. The reason is that we have multiple instances of the pinctrl-single: one for core domain and one for wkup domain. Those instances cover the padconf registers. Then further instances of pinctrl-single,bits will be used for the various other SCM registers. Felipe suggested adding a macro like OMAP4_PAD(offset, value) to make it less confusing, but for omap4 core padconf area the difference is 0x40, and 0x30 for omap3 if I remember correctly. > Below are the definitions that I need to move into a dts. > > /* MMC2 Mux for extension board */ > /* MMC2 CMD */ > OMAP4_MUX(GPMC_NWE, OMAP_MUX_MODE1 | OMAP_PIN_INPUT_PULLUP), > /* MMC2 CLK */ > OMAP4_MUX(GPMC_NOE, OMAP_MUX_MODE1 | OMAP_PIN_INPUT_PULLUP), > /* MMC2 DAT 0-7 */ > OMAP4_MUX(GPMC_AD0, OMAP_MUX_MODE1 | OMAP_PIN_INPUT_PULLUP), > OMAP4_MUX(GPMC_AD1, OMAP_MUX_MODE1 | OMAP_PIN_INPUT_PULLUP), > OMAP4_MUX(GPMC_AD2, OMAP_MUX_MODE1 | OMAP_PIN_INPUT_PULLUP), > OMAP4_MUX(GPMC_AD3, OMAP_MUX_MODE1 | OMAP_PIN_INPUT_PULLUP), Assuming these are all in the core padconf area, just take the TRM register offset and subtract 0x40. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
