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i.MX31: Fix mx31_gpio_mux() function and MUX_-macros.

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Correct the mx31_gpio_mux() function to allow changing all i.MX31 IOMUX
contacts instead of only the first 256 ones as is the case prior to
this patch.

Add missing MUX_* macros and update board files to use the new macros.

Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com>
master
Magnus Lilja 16 years ago committed by Jean-Christophe PLAGNIOL-VILLARD
parent b6b183c5b2
commit 5276a3584d
4 changed files with 40 additions and 25 deletions
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  1. 14
      board/imx31_litekit/imx31_litekit.c
  2. 14
      board/mx31ads/mx31ads.c
  3. 4
      cpu/arm1136/mx31/generic.c
  4. 33
      include/asm-arm/arch-mx31/mx31-regs.h

14
board/imx31_litekit/imx31_litekit.c
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@ -53,13 +53,13 @@ int board_init (void)
mx31_gpio_mux(MUX_CTS1__UART1_CTS_B);
/* SPI2 */
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SS2);
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SCLK);
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SPI_RDY);
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_MOSI);
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_MISO);
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SS0);
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SS1);
mx31_gpio_mux(MUX_CSPI2_SS2__CSPI2_SS2_B);
mx31_gpio_mux(MUX_CSPI2_SCLK__CSPI2_CLK);
mx31_gpio_mux(MUX_CSPI2_SPI_RDY__CSPI2_DATAREADY_B);
mx31_gpio_mux(MUX_CSPI2_MOSI__CSPI2_MOSI);
mx31_gpio_mux(MUX_CSPI2_MISO__CSPI2_MISO);
mx31_gpio_mux(MUX_CSPI2_SS0__CSPI2_SS0_B);
mx31_gpio_mux(MUX_CSPI2_SS1__CSPI2_SS1_B);
/* start SPI2 clock */
__REG(CCM_CGR2) = __REG(CCM_CGR2) | (3 << 4);

14
board/mx31ads/mx31ads.c
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@ -58,13 +58,13 @@ int board_init (void)
mx31_gpio_mux(MUX_CTS1__UART1_CTS_B);
/* SPI2 */
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SS2);
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SCLK);
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SPI_RDY);
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_MOSI);
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_MISO);
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SS0);
mx31_gpio_mux((MUX_CTL_FUNC << 8) | MUX_CTL_CSPI2_SS1);
mx31_gpio_mux(MUX_CSPI2_SS2__CSPI2_SS2_B);
mx31_gpio_mux(MUX_CSPI2_SCLK__CSPI2_CLK);
mx31_gpio_mux(MUX_CSPI2_SPI_RDY__CSPI2_DATAREADY_B);
mx31_gpio_mux(MUX_CSPI2_MOSI__CSPI2_MOSI);
mx31_gpio_mux(MUX_CSPI2_MISO__CSPI2_MISO);
mx31_gpio_mux(MUX_CSPI2_SS0__CSPI2_SS0_B);
mx31_gpio_mux(MUX_CSPI2_SS1__CSPI2_SS1_B);
/* start SPI2 clock */
__REG(CCM_CGR2) = __REG(CCM_CGR2) | (3 << 4);

4
cpu/arm1136/mx31/generic.c
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@ -81,12 +81,12 @@ void mx31_gpio_mux(unsigned long mode)
{
unsigned long reg, shift, tmp;
reg = IOMUXC_BASE + (mode & 0xfc);
reg = IOMUXC_BASE + (mode & 0x1fc);
shift = (~mode & 0x3) * 8;
tmp = __REG(reg);
tmp &= ~(0xff << shift);
tmp |= ((mode >> 8) & 0xff) << shift;
tmp |= ((mode >> IOMUX_MODE_POS) & 0xff) << shift;
__REG(reg) = tmp;
}

33
include/asm-arm/arch-mx31/mx31-regs.h
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@ -126,17 +126,32 @@
#define MUX_CTL_CSPI2_SS2 0x87
#define MUX_CTL_CSPI2_MOSI 0x8b
/* The modes a specific pin can be in
* these macros can be used in mx31_gpio_mux() and have the form
* MUX_[contact name]__[pin function]
/*
* Helper macros for the MUX_[contact name]__[pin function] macros
*/
#define MUX_RXD1__UART1_RXD_MUX ((MUX_CTL_FUNC << 8) | MUX_CTL_RXD1)
#define MUX_TXD1__UART1_TXD_MUX ((MUX_CTL_FUNC << 8) | MUX_CTL_TXD1)
#define MUX_RTS1__UART1_RTS_B ((MUX_CTL_FUNC << 8) | MUX_CTL_RTS1)
#define MUX_CTS1__UART1_CTS_B ((MUX_CTL_FUNC << 8) | MUX_CTL_CTS1)
#define IOMUX_MODE_POS 9
#define IOMUX_MODE(contact, mode) (((mode) << IOMUX_MODE_POS) | (contact))
#define MUX_CSPI2_MOSI__I2C2_SCL ((MUX_CTL_ALT1 << 8) | MUX_CTL_CSPI2_MOSI)
#define MUX_CSPI2_MISO__I2C2_SDA ((MUX_CTL_ALT1 << 8) | MUX_CTL_CSPI2_MISO)
/*
* These macros can be used in mx31_gpio_mux() and have the form
* MUX_[contact name]__[pin function]
*/
#define MUX_RXD1__UART1_RXD_MUX IOMUX_MODE(MUX_CTL_RXD1, MUX_CTL_FUNC)
#define MUX_TXD1__UART1_TXD_MUX IOMUX_MODE(MUX_CTL_TXD1, MUX_CTL_FUNC)
#define MUX_RTS1__UART1_RTS_B IOMUX_MODE(MUX_CTL_RTS1, MUX_CTL_FUNC)
#define MUX_CTS1__UART1_CTS_B IOMUX_MODE(MUX_CTL_CTS1, MUX_CTL_FUNC)
#define MUX_CSPI2_SS0__CSPI2_SS0_B IOMUX_MODE(MUX_CTL_CSPI2_SS0, MUX_CTL_FUNC)
#define MUX_CSPI2_SS1__CSPI2_SS1_B IOMUX_MODE(MUX_CTL_CSPI2_SS1, MUX_CTL_FUNC)
#define MUX_CSPI2_SS2__CSPI2_SS2_B IOMUX_MODE(MUX_CTL_CSPI2_SS2, MUX_CTL_FUNC)
#define MUX_CSPI2_MOSI__CSPI2_MOSI IOMUX_MODE(MUX_CTL_CSPI2_MOSI, MUX_CTL_FUNC)
#define MUX_CSPI2_MISO__CSPI2_MISO IOMUX_MODE(MUX_CTL_CSPI2_MISO, MUX_CTL_FUNC)
#define MUX_CSPI2_SPI_RDY__CSPI2_DATAREADY_B \
IOMUX_MODE(MUX_CTL_CSPI2_SPI_RDY, MUX_CTL_FUNC)
#define MUX_CSPI2_SCLK__CSPI2_CLK IOMUX_MODE(MUX_CTL_CSPI2_SCLK, MUX_CTL_FUNC)
#define MUX_CSPI2_MOSI__I2C2_SCL IOMUX_MODE(MUX_CTL_CSPI2_MOSI, MUX_CTL_ALT1)
#define MUX_CSPI2_MISO__I2C2_SDA IOMUX_MODE(MUX_CTL_CSPI2_MISO, MUX_CTL_ALT1)
/*
* Memory regions and CS

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