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mx5: Add i2c to Freescale MX51 Babbage HW

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This patch adds I2C functionality to the Freescale MX51 Babbage HW.
The patch adds device structures, i2c board slave device defines,
IOMUX pin defines, and clocks.

Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Dinh Nguyen 2010-05-27 10:45:04 -05:00 committed by Sascha Hauer
parent 9b839ec0a8
commit 71c2e514d5
4 changed files with 84 additions and 6 deletions
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11
arch/arm/mach-mx5/clock-mx51.c
View File

@ -798,6 +798,14 @@ DEFINE_CLOCK(gpt_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG9_OFFSET,
DEFINE_CLOCK(gpt_ipg_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG10_OFFSET,
NULL, NULL, &ipg_clk, NULL);
/* I2C */
DEFINE_CLOCK(i2c1_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG9_OFFSET,
NULL, NULL, &ipg_clk, NULL);
DEFINE_CLOCK(i2c2_clk, 1, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG10_OFFSET,
NULL, NULL, &ipg_clk, NULL);
DEFINE_CLOCK(hsi2c_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG11_OFFSET,
NULL, NULL, &ipg_clk, NULL);
/* FEC */
DEFINE_CLOCK(fec_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG12_OFFSET,
NULL, NULL, &ipg_clk, NULL);
@ -815,6 +823,9 @@ static struct clk_lookup lookups[] = {
_REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk)
_REGISTER_CLOCK(NULL, "gpt", gpt_clk)
_REGISTER_CLOCK("fec.0", NULL, fec_clk)
_REGISTER_CLOCK("imx-i2c.0", NULL, i2c1_clk)
_REGISTER_CLOCK("imx-i2c.1", NULL, i2c2_clk)
_REGISTER_CLOCK("imx-i2c.2", NULL, hsi2c_clk)
_REGISTER_CLOCK("mxc-ehci.0", "usb", usboh3_clk)
_REGISTER_CLOCK("mxc-ehci.0", "usb_ahb", ahb_clk)
_REGISTER_CLOCK("mxc-ehci.1", "usb", usboh3_clk)

58
arch/arm/mach-mx5/devices.c
View File

@ -93,6 +93,64 @@ struct platform_device mxc_fec_device = {
.resource = mxc_fec_resources,
};
static struct resource mxc_i2c0_resources[] = {
{
.start = MX51_I2C1_BASE_ADDR,
.end = MX51_I2C1_BASE_ADDR + SZ_4K - 1,
.flags = IORESOURCE_MEM,
}, {
.start = MX51_MXC_INT_I2C1,
.end = MX51_MXC_INT_I2C1,
.flags = IORESOURCE_IRQ,
},
};
struct platform_device mxc_i2c_device0 = {
.name = "imx-i2c",
.id = 0,
.num_resources = ARRAY_SIZE(mxc_i2c0_resources),
.resource = mxc_i2c0_resources,
};
static struct resource mxc_i2c1_resources[] = {
{
.start = MX51_I2C2_BASE_ADDR,
.end = MX51_I2C2_BASE_ADDR + SZ_4K - 1,
.flags = IORESOURCE_MEM,
}, {
.start = MX51_MXC_INT_I2C2,
.end = MX51_MXC_INT_I2C2,
.flags = IORESOURCE_IRQ,
},
};
struct platform_device mxc_i2c_device1 = {
.name = "imx-i2c",
.id = 1,
.num_resources = ARRAY_SIZE(mxc_i2c1_resources),
.resource = mxc_i2c1_resources,
};
static struct resource mxc_hsi2c_resources[] = {
{
.start = MX51_HSI2C_DMA_BASE_ADDR,
.end = MX51_HSI2C_DMA_BASE_ADDR + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
{
.start = MX51_MXC_INT_HS_I2C,
.end = MX51_MXC_INT_HS_I2C,
.flags = IORESOURCE_IRQ,
},
};
struct platform_device mxc_hsi2c_device = {
.name = "imx-i2c",
.id = 2,
.num_resources = ARRAY_SIZE(mxc_hsi2c_resources),
.resource = mxc_hsi2c_resources
};
static u64 usb_dma_mask = DMA_BIT_MASK(32);
static struct resource usbotg_resources[] = {

3
arch/arm/mach-mx5/devices.h
View File

@ -6,3 +6,6 @@ extern struct platform_device mxc_usbdr_host_device;
extern struct platform_device mxc_usbh1_device;
extern struct platform_device mxc_usbdr_udc_device;
extern struct platform_device mxc_wdt;
extern struct platform_device mxc_i2c_device0;
extern struct platform_device mxc_i2c_device1;
extern struct platform_device mxc_hsi2c_device;

18
arch/arm/plat-mxc/include/mach/iomux-mx51.h
View File

@ -38,6 +38,8 @@ typedef enum iomux_config {
PAD_CTL_SRE_FAST)
#define MX51_UART3_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_DSE_HIGH | \
PAD_CTL_SRE_FAST)
#define MX51_I2C_PAD_CTRL (PAD_CTL_SRE_FAST | PAD_CTL_ODE | \
PAD_CTL_DSE_HIGH | PAD_CTL_PUS_100K_UP | PAD_CTL_HYS)
#define MX51_USBH1_PAD_CTRL (PAD_CTL_SRE_FAST | PAD_CTL_DSE_HIGH | \
PAD_CTL_PUS_100K_UP | PAD_CTL_PUE | \
PAD_CTL_PKE | PAD_CTL_HYS)
@ -57,10 +59,12 @@ typedef enum iomux_config {
/* PAD MUX ALT INPSE PATH PADCTRL */
#define MX51_PAD_GPIO_2_0__EIM_D16 IOMUX_PAD(0x3f0, 0x05c, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_EIM_D16__I2C1_SDA IOMUX_PAD(0x3f0, 0x05c, IOMUX_CONFIG_ALT4 | IOMUX_CONFIG_SION, \
0x09b4, 0, MX51_I2C_PAD_CTRL)
#define MX51_PAD_GPIO_2_1__EIM_D17 IOMUX_PAD(0x3f4, 0x060, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_2_2__EIM_D18 IOMUX_PAD(0x3f8, 0x064, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_2_3__EIM_D19 IOMUX_PAD(0x3fc, 0x068, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_EIM_D19__I2C1_SCL IOMUX_PAD(0x3fc, 0x068, IOMUX_CONFIG_ALT4 | IOMUX_CONFIG_SION, \
0x09b0, 0, MX51_I2C_PAD_CTRL)
#define MX51_PAD_GPIO_2_4__EIM_D20 IOMUX_PAD(0x400, 0x06c, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_2_5__EIM_D21 IOMUX_PAD(0x404, 0x070, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_EIM_D21__GPIO_2_5 IOMUX_PAD(0x404, 0x070, IOMUX_CONFIG_ALT1, 0x0, 0, MX51_GPIO_PAD_CTRL)
@ -179,8 +183,8 @@ typedef enum iomux_config {
#define MX51_PAD_GPIO_4_14__CSI2_HSYNC IOMUX_PAD(0x5E0, 0x1F0, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_4_15__CSI2_PIXCLK IOMUX_PAD(0x5E4, 0x1F4, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_CSI2_PKE0__CSI2_PKE0 IOMUX_PAD(0x81C, 0x0, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_4_16__I2C1_CLK IOMUX_PAD(0x5E8, 0x1F8, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_4_17__I2C1_DAT IOMUX_PAD(0x5EC, 0x1FC, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_I2C1_CLK__HSI2C_CLK IOMUX_PAD(0x5E8, 0x1F8, IOMUX_CONFIG_ALT0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_I2C1_DAT__HSI2C_DAT IOMUX_PAD(0x5EC, 0x1FC, IOMUX_CONFIG_ALT0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_4_18__AUD3_BB_TXD IOMUX_PAD(0x5F0, 0x200, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_4_19__AUD3_BB_RXD IOMUX_PAD(0x5F4, 0x204, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_4_20__AUD3_BB_CK IOMUX_PAD(0x5F8, 0x208, 3, 0x0, 0, NO_PAD_CTRL)
@ -213,8 +217,10 @@ typedef enum iomux_config {
#define MX51_PAD_KEY_COL1__KEY_COL1 IOMUX_PAD(0x650, 0x260, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_KEY_COL2__KEY_COL2 IOMUX_PAD(0x654, 0x264, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_KEY_COL3__KEY_COL3 IOMUX_PAD(0x658, 0x268, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_KEY_COL4__KEY_COL4 IOMUX_PAD(0x65C, 0x26C, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_KEY_COL5__KEY_COL5 IOMUX_PAD(0x660, 0x270, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_KEY_COL4__I2C2_SCL IOMUX_PAD(0x65C, 0x26C, IOMUX_CONFIG_ALT3 | IOMUX_CONFIG_SION, \
0x09b8, 1, MX51_I2C_PAD_CTRL)
#define MX51_PAD_KEY_COL5__I2C2_SDA IOMUX_PAD(0x660, 0x270, IOMUX_CONFIG_ALT3 | IOMUX_CONFIG_SION, \
0x09bc, 1, MX51_I2C_PAD_CTRL)
#define MX51_PAD_USBH1_CLK__USBH1_CLK IOMUX_PAD(0x678, 0x278, IOMUX_CONFIG_ALT0, 0x0, 0, MX51_USBH1_PAD_CTRL)
#define MX51_PAD_USBH1_DIR__USBH1_DIR IOMUX_PAD(0x67C, 0x27C, IOMUX_CONFIG_ALT0, 0x0, 0, MX51_USBH1_PAD_CTRL)
#define MX51_PAD_USBH1_STP__USBH1_STP IOMUX_PAD(0x680, 0x280, IOMUX_CONFIG_ALT0, 0x0, 0, MX51_USBH1_PAD_CTRL)