This patch modifies mxcmmc.c to be used not only by i.MX27 but also by i.MX31 boards. Both use the same SD controller, but have different clock set-ups. The i.MX27 imx_get_XXXclock functions are made static to generic.c and a public mxc_get_clock() function is provided. Pins, base address and prototypes for an i.MX31 specific board_init_mmc() are provided. Some of the i.MX27 clock getters are unused and marked as such to avoid warnings (./MAKEALL -s mx27), but the code was left in for future use.
Signed-off-by: Helmut Raiger helmut.raiger@hale.at ---
V3: - rebased to current master - added support in TT-01 board code for it (see other patch) V2: - uses mxc_get_clock() instead of old imx_get_XXX functions - moved mx27 stuff to mxc_get_clock() aswell
arch/arm/cpu/arm1136/mx31/generic.c | 1 + arch/arm/cpu/arm926ejs/mx27/generic.c | 35 ++++++++++++++++++++------- arch/arm/include/asm/arch-mx27/clock.h | 22 +++++++---------- arch/arm/include/asm/arch-mx31/clock.h | 3 +- arch/arm/include/asm/arch-mx31/imx-regs.h | 11 ++++++++ arch/arm/include/asm/arch-mx31/sys_proto.h | 2 +- drivers/mmc/mxcmmc.c | 8 ++---- 7 files changed, 53 insertions(+), 29 deletions(-)
diff --git a/arch/arm/cpu/arm1136/mx31/generic.c b/arch/arm/cpu/arm1136/mx31/generic.c index f458281..d60afc9 100644 --- a/arch/arm/cpu/arm1136/mx31/generic.c +++ b/arch/arm/cpu/arm1136/mx31/generic.c @@ -101,6 +101,7 @@ unsigned int mxc_get_clock(enum mxc_clock clk) case MXC_IPG_PERCLK: case MXC_CSPI_CLK: case MXC_UART_CLK: + case MXC_ESDHC_CLK: return mx31_get_ipg_clk(); case MXC_IPU_CLK: return mx31_get_hsp_clk(); diff --git a/arch/arm/cpu/arm926ejs/mx27/generic.c b/arch/arm/cpu/arm926ejs/mx27/generic.c index 222a8e9..8964a75 100644 --- a/arch/arm/cpu/arm926ejs/mx27/generic.c +++ b/arch/arm/cpu/arm926ejs/mx27/generic.c @@ -23,6 +23,7 @@ #include <netdev.h> #include <asm/io.h> #include <asm/arch/imx-regs.h> +#include <asm/arch/clock.h> #ifdef CONFIG_MXC_MMC #include <asm/arch/mxcmmc.h> #endif @@ -34,7 +35,7 @@ * f = 2 * f_ref * -------------------- * pd + 1 */ -unsigned int imx_decode_pll(unsigned int pll, unsigned int f_ref) +static unsigned int imx_decode_pll(unsigned int pll, unsigned int f_ref) { unsigned int mfi = (pll >> 10) & 0xf; unsigned int mfn = pll & 0x3ff; @@ -64,7 +65,7 @@ static ulong clk_in_26m(void) } }
-ulong imx_get_mpllclk(void) +static ulong imx_get_mpllclk(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; ulong cscr = readl(&pll->cscr); @@ -78,7 +79,7 @@ ulong imx_get_mpllclk(void) return imx_decode_pll(readl(&pll->mpctl0), fref); }
-ulong imx_get_armclk(void) +static ulong imx_get_armclk(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; ulong cscr = readl(&pll->cscr); @@ -93,7 +94,7 @@ ulong imx_get_armclk(void) return lldiv(fref, div); }
-ulong imx_get_ahbclk(void) +static ulong imx_get_ahbclk(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; ulong cscr = readl(&pll->cscr); @@ -105,7 +106,7 @@ ulong imx_get_ahbclk(void) return lldiv(fref * 2, 3 * div); }
-ulong imx_get_spllclk(void) +static __attribute__((unused)) ulong imx_get_spllclk(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; ulong cscr = readl(&pll->cscr); @@ -124,34 +125,50 @@ static ulong imx_decode_perclk(ulong div) return lldiv((imx_get_mpllclk() * 2), (div * 3)); }
-ulong imx_get_perclk1(void) +static ulong imx_get_perclk1(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE;
return imx_decode_perclk((readl(&pll->pcdr1) & 0x3f) + 1); }
-ulong imx_get_perclk2(void) +static ulong imx_get_perclk2(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE;
return imx_decode_perclk(((readl(&pll->pcdr1) >> 8) & 0x3f) + 1); }
-ulong imx_get_perclk3(void) +static __attribute__((unused)) ulong imx_get_perclk3(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE;
return imx_decode_perclk(((readl(&pll->pcdr1) >> 16) & 0x3f) + 1); }
-ulong imx_get_perclk4(void) +static __attribute__((unused)) ulong imx_get_perclk4(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE;
return imx_decode_perclk(((readl(&pll->pcdr1) >> 24) & 0x3f) + 1); }
+unsigned int mxc_get_clock(enum mxc_clock clk) +{ + switch (clk) { + case MXC_ARM_CLK: + return imx_get_armclk(); + case MXC_UART_CLK: + return imx_get_perclk1(); + case MXC_FEC_CLK: + return imx_get_ahbclk(); + case MXC_ESDHC_CLK: + return imx_get_perclk2(); + } + return -1; +} + + #if defined(CONFIG_DISPLAY_CPUINFO) int print_cpuinfo (void) { diff --git a/arch/arm/include/asm/arch-mx27/clock.h b/arch/arm/include/asm/arch-mx27/clock.h index 7e9c7aa..fd062d3 100644 --- a/arch/arm/include/asm/arch-mx27/clock.h +++ b/arch/arm/include/asm/arch-mx27/clock.h @@ -23,20 +23,16 @@
#ifndef __ASM_ARCH_CLOCK_H #define __ASM_ARCH_CLOCK_H -unsigned int imx_decode_pll(unsigned int pll, unsigned int f_ref);
-ulong imx_get_mpllclk(void); -ulong imx_get_armclk(void); -ulong imx_get_spllclk(void); -ulong imx_get_fclk(void); -ulong imx_get_hclk(void); -ulong imx_get_bclk(void); -ulong imx_get_perclk1(void); -ulong imx_get_perclk2(void); -ulong imx_get_perclk3(void); -ulong imx_get_ahbclk(void); +enum mxc_clock { + MXC_ARM_CLK, + MXC_UART_CLK, + MXC_ESDHC_CLK, + MXC_FEC_CLK, +};
-#define imx_get_uartclk imx_get_perclk1 -#define imx_get_fecclk imx_get_ahbclk +unsigned int mxc_get_clock(enum mxc_clock clk); +#define imx_get_uartclk() mxc_get_clock(MXC_UART_CLK) +#define imx_get_fecclk() mxc_get_clock(MXC_FEC_CLK)
#endif /* __ASM_ARCH_CLOCK_H */ diff --git a/arch/arm/include/asm/arch-mx31/clock.h b/arch/arm/include/asm/arch-mx31/clock.h index 253a0e1..852c19c 100644 --- a/arch/arm/include/asm/arch-mx31/clock.h +++ b/arch/arm/include/asm/arch-mx31/clock.h @@ -30,7 +30,8 @@ enum mxc_clock { MXC_IPG_PERCLK, MXC_CSPI_CLK, MXC_UART_CLK, - MXC_IPU_CLK + MXC_IPU_CLK, + MXC_ESDHC_CLK, };
unsigned int mxc_get_clock(enum mxc_clock clk); diff --git a/arch/arm/include/asm/arch-mx31/imx-regs.h b/arch/arm/include/asm/arch-mx31/imx-regs.h index 6a517dd..798cc74 100644 --- a/arch/arm/include/asm/arch-mx31/imx-regs.h +++ b/arch/arm/include/asm/arch-mx31/imx-regs.h @@ -709,6 +709,13 @@ struct esdc_regs { #define MUX_CTL_CSPI3_SPI_RDY 0x0e #define MUX_CTL_CSPI3_MOSI 0x13
+#define MUX_CTL_SD1_DATA1 0x18 +#define MUX_CTL_SD1_DATA2 0x19 +#define MUX_CTL_SD1_DATA3 0x1a +#define MUX_CTL_SD1_CMD 0x1d +#define MUX_CTL_SD1_CLK 0x1e +#define MUX_CTL_SD1_DATA0 0x1f + #define MUX_CTL_USBH2_DATA1 0x40 #define MUX_CTL_USBH2_DIR 0x44 #define MUX_CTL_USBH2_STP 0x45 @@ -855,6 +862,10 @@ struct esdc_regs { */ #define NFC_BASE_ADDR 0xB8000000
+/* SD card controller */ +#define SDHC1_BASE_ADDR 0x50004000 +#define SDHC2_BASE_ADDR 0x50008000 + /* * Internal RAM (16KB) */ diff --git a/arch/arm/include/asm/arch-mx31/sys_proto.h b/arch/arm/include/asm/arch-mx31/sys_proto.h index 7600303..ded481c 100644 --- a/arch/arm/include/asm/arch-mx31/sys_proto.h +++ b/arch/arm/include/asm/arch-mx31/sys_proto.h @@ -31,5 +31,5 @@ struct mxc_weimcs { };
void mxc_setup_weimcs(int cs, const struct mxc_weimcs *weimcs); - +int mxc_mmc_init(bd_t *bis); #endif diff --git a/drivers/mmc/mxcmmc.c b/drivers/mmc/mxcmmc.c index ab1fc82..ff2bb51 100644 --- a/drivers/mmc/mxcmmc.c +++ b/drivers/mmc/mxcmmc.c @@ -25,9 +25,7 @@ #include <mmc.h> #include <asm/errno.h> #include <asm/io.h> -#ifdef CONFIG_MX27 #include <asm/arch/clock.h> -#endif
#define DRIVER_NAME "mxc-mmc"
@@ -422,7 +420,7 @@ static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios) { unsigned int divider; int prescaler = 0; - unsigned long clk_in = imx_get_perclk2(); + unsigned long clk_in = mxc_get_clock(MXC_ESDHC_CLK);
while (prescaler <= 0x800) { for (divider = 1; divider <= 0xF; divider++) { @@ -508,8 +506,8 @@ static int mxcmci_initialize(bd_t *bis)
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
- mmc->f_min = imx_get_perclk2() >> 7; - mmc->f_max = imx_get_perclk2() >> 1; + mmc->f_min = mxc_get_clock(MXC_ESDHC_CLK) >> 7; + mmc->f_max = mxc_get_clock(MXC_ESDHC_CLK) >> 1;
mmc->b_max = 0;