From: Cory Maccarrone <[email protected]> The MMC mux pins normally used by omap chips in devices.c are different from what is needed by omap7xx chips. This change adds a conditional around the mux setup code to enable the correct mux pins.
The omap730 and omap850 both use a different clock for the "fck" clock of the MMC interface than other omap processors based on the SOFT_REQ_REG, pin 12. The "ick" clock is the same as that used by other omap processors. * Added the missing clock definition as mmc3_ck to clock.h * Added the clock definition to omap_clks in clock.c * Added CK_7XX to the mmci-omap.0 "ick" clock already in clock.c With these changes, it is now possible to initialize and use MMC cards with omap730 and omap850 devices. Signed-off-by: Cory Maccarrone <[email protected]> Signed-off-by: Tony Lindgren <[email protected]> --- arch/arm/mach-omap1/clock.c | 3 ++- arch/arm/mach-omap1/clock.h | 12 ++++++++++++ arch/arm/mach-omap1/devices.c | 15 +++++++++++---- arch/arm/mach-omap1/mux.c | 5 +++++ arch/arm/plat-omap/include/plat/mux.h | 5 +++++ 5 files changed, 35 insertions(+), 5 deletions(-) diff --git a/arch/arm/mach-omap1/clock.c b/arch/arm/mach-omap1/clock.c index b4fec9a..7b146c0 100644 --- a/arch/arm/mach-omap1/clock.c +++ b/arch/arm/mach-omap1/clock.c @@ -125,7 +125,8 @@ static struct omap_clk omap_clks[] = { CLK(NULL, "bclk", &bclk_1510, CK_1510 | CK_310), CLK(NULL, "bclk", &bclk_16xx, CK_16XX), CLK("mmci-omap.0", "fck", &mmc1_ck, CK_16XX | CK_1510 | CK_310), - CLK("mmci-omap.0", "ick", &armper_ck.clk, CK_16XX | CK_1510 | CK_310), + CLK("mmci-omap.0", "fck", &mmc3_ck, CK_7XX), + CLK("mmci-omap.0", "ick", &armper_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), CLK("mmci-omap.1", "fck", &mmc2_ck, CK_16XX), CLK("mmci-omap.1", "ick", &armper_ck.clk, CK_16XX), /* Virtual clocks */ diff --git a/arch/arm/mach-omap1/clock.h b/arch/arm/mach-omap1/clock.h index 17f8742..fac921c 100644 --- a/arch/arm/mach-omap1/clock.h +++ b/arch/arm/mach-omap1/clock.h @@ -637,6 +637,18 @@ static struct clk mmc2_ck = { .enable_bit = 20, }; +static struct clk mmc3_ck = { + .name = "mmc_ck", + .id = 2, + .ops = &clkops_generic, + /* Functional clock is direct from ULPD, interface clock is ARMPER */ + .parent = &armper_ck.clk, + .rate = 48000000, + .flags = RATE_FIXED | ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, + .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), + .enable_bit = 12, +}; + static struct clk virtual_ck_mpu = { .name = "mpu", .ops = &clkops_null, diff --git a/arch/arm/mach-omap1/devices.c b/arch/arm/mach-omap1/devices.c index 6d2f72d..23ded2d 100644 --- a/arch/arm/mach-omap1/devices.c +++ b/arch/arm/mach-omap1/devices.c @@ -108,15 +108,22 @@ static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller, int controller_nr) { if (controller_nr == 0) { - omap_cfg_reg(MMC_CMD); - omap_cfg_reg(MMC_CLK); - omap_cfg_reg(MMC_DAT0); + if (cpu_is_omap7xx()) { + omap_cfg_reg(MMC_7XX_CMD); + omap_cfg_reg(MMC_7XX_CLK); + omap_cfg_reg(MMC_7XX_DAT0); + } else { + omap_cfg_reg(MMC_CMD); + omap_cfg_reg(MMC_CLK); + omap_cfg_reg(MMC_DAT0); + } + if (cpu_is_omap1710()) { omap_cfg_reg(M15_1710_MMC_CLKI); omap_cfg_reg(P19_1710_MMC_CMDDIR); omap_cfg_reg(P20_1710_MMC_DATDIR0); } - if (mmc_controller->slots[0].wires == 4) { + if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) { omap_cfg_reg(MMC_DAT1); /* NOTE: DAT2 can be on W10 (here) or M15 */ if (!mmc_controller->slots[0].nomux) diff --git a/arch/arm/mach-omap1/mux.c b/arch/arm/mach-omap1/mux.c index 1e6145c..785371e 100644 --- a/arch/arm/mach-omap1/mux.c +++ b/arch/arm/mach-omap1/mux.c @@ -51,6 +51,11 @@ MUX_CFG_7XX("E3_7XX_KBC4", 13, 25, 0, 24, 1, 0) MUX_CFG_7XX("AA17_7XX_USB_DM", 2, 21, 0, 20, 0, 0) MUX_CFG_7XX("W16_7XX_USB_PU_EN", 2, 25, 0, 24, 0, 0) MUX_CFG_7XX("W17_7XX_USB_VBUSI", 2, 29, 0, 28, 0, 0) + +/* MMC Pins */ +MUX_CFG_7XX("MMC_7XX_CMD", 2, 9, 0, 8, 1, 0) +MUX_CFG_7XX("MMC_7XX_CLK", 2, 13, 0, 12, 1, 0) +MUX_CFG_7XX("MMC_7XX_DAT0", 2, 17, 0, 16, 1, 0) }; #define OMAP7XX_PINS_SZ ARRAY_SIZE(omap7xx_pins) #else diff --git a/arch/arm/plat-omap/include/plat/mux.h b/arch/arm/plat-omap/include/plat/mux.h index f3c1d8a..56e357e 100644 --- a/arch/arm/plat-omap/include/plat/mux.h +++ b/arch/arm/plat-omap/include/plat/mux.h @@ -219,6 +219,11 @@ enum omap7xx_index { AA17_7XX_USB_DM, W16_7XX_USB_PU_EN, W17_7XX_USB_VBUSI, + + /* MMC */ + MMC_7XX_CMD, + MMC_7XX_CLK, + MMC_7XX_DAT0, }; enum omap1xxx_index { -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
