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-rw-r--r--arch/arm/mach-davinci/dm355.c540
1 files changed, 540 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c
new file mode 100644
index 00000000000..c02115f1eb9
--- /dev/null
+++ b/arch/arm/mach-davinci/dm355.c
@@ -0,0 +1,540 @@
+/*
+ * TI DaVinci DM355 chip specific setup
+ *
+ * Author: Kevin Hilman, Deep Root Systems, LLC
+ *
+ * 2007 (c) Deep Root Systems, LLC. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+
+#include <linux/spi/spi.h>
+
+#include <mach/dm355.h>
+#include <mach/clock.h>
+#include <mach/cputype.h>
+#include <mach/edma.h>
+#include <mach/psc.h>
+#include <mach/mux.h>
+#include <mach/irqs.h>
+
+#include "clock.h"
+#include "mux.h"
+
+/*
+ * Device specific clocks
+ */
+#define DM355_REF_FREQ 24000000 /* 24 or 36 MHz */
+
+static struct pll_data pll1_data = {
+ .num = 1,
+ .phys_base = DAVINCI_PLL1_BASE,
+ .flags = PLL_HAS_PREDIV | PLL_HAS_POSTDIV,
+};
+
+static struct pll_data pll2_data = {
+ .num = 2,
+ .phys_base = DAVINCI_PLL2_BASE,
+ .flags = PLL_HAS_PREDIV,
+};
+
+static struct clk ref_clk = {
+ .name = "ref_clk",
+ /* FIXME -- crystal rate is board-specific */
+ .rate = DM355_REF_FREQ,
+};
+
+static struct clk pll1_clk = {
+ .name = "pll1",
+ .parent = &ref_clk,
+ .flags = CLK_PLL,
+ .pll_data = &pll1_data,
+};
+
+static struct clk pll1_aux_clk = {
+ .name = "pll1_aux_clk",
+ .parent = &pll1_clk,
+ .flags = CLK_PLL | PRE_PLL,
+};
+
+static struct clk pll1_sysclk1 = {
+ .name = "pll1_sysclk1",
+ .parent = &pll1_clk,
+ .flags = CLK_PLL,
+ .div_reg = PLLDIV1,
+};
+
+static struct clk pll1_sysclk2 = {
+ .name = "pll1_sysclk2",
+ .parent = &pll1_clk,
+ .flags = CLK_PLL,
+ .div_reg = PLLDIV2,
+};
+
+static struct clk pll1_sysclk3 = {
+ .name = "pll1_sysclk3",
+ .parent = &pll1_clk,
+ .flags = CLK_PLL,
+ .div_reg = PLLDIV3,
+};
+
+static struct clk pll1_sysclk4 = {
+ .name = "pll1_sysclk4",
+ .parent = &pll1_clk,
+ .flags = CLK_PLL,
+ .div_reg = PLLDIV4,
+};
+
+static struct clk pll1_sysclkbp = {
+ .name = "pll1_sysclkbp",
+ .parent = &pll1_clk,
+ .flags = CLK_PLL | PRE_PLL,
+ .div_reg = BPDIV
+};
+
+static struct clk vpss_dac_clk = {
+ .name = "vpss_dac",
+ .parent = &pll1_sysclk3,
+ .lpsc = DM355_LPSC_VPSS_DAC,
+};
+
+static struct clk vpss_master_clk = {
+ .name = "vpss_master",
+ .parent = &pll1_sysclk4,
+ .lpsc = DAVINCI_LPSC_VPSSMSTR,
+ .flags = CLK_PSC,
+};
+
+static struct clk vpss_slave_clk = {
+ .name = "vpss_slave",
+ .parent = &pll1_sysclk4,
+ .lpsc = DAVINCI_LPSC_VPSSSLV,
+};
+
+
+static struct clk clkout1_clk = {
+ .name = "clkout1",
+ .parent = &pll1_aux_clk,
+ /* NOTE: clkout1 can be externally gated by muxing GPIO-18 */
+};
+
+static struct clk clkout2_clk = {
+ .name = "clkout2",
+ .parent = &pll1_sysclkbp,
+};
+
+static struct clk pll2_clk = {
+ .name = "pll2",
+ .parent = &ref_clk,
+ .flags = CLK_PLL,
+ .pll_data = &pll2_data,
+};
+
+static struct clk pll2_sysclk1 = {
+ .name = "pll2_sysclk1",
+ .parent = &pll2_clk,
+ .flags = CLK_PLL,
+ .div_reg = PLLDIV1,
+};
+
+static struct clk pll2_sysclkbp = {
+ .name = "pll2_sysclkbp",
+ .parent = &pll2_clk,
+ .flags = CLK_PLL | PRE_PLL,
+ .div_reg = BPDIV
+};
+
+static struct clk clkout3_clk = {
+ .name = "clkout3",
+ .parent = &pll2_sysclkbp,
+ /* NOTE: clkout3 can be externally gated by muxing GPIO-16 */
+};
+
+static struct clk arm_clk = {
+ .name = "arm_clk",
+ .parent = &pll1_sysclk1,
+ .lpsc = DAVINCI_LPSC_ARM,
+ .flags = ALWAYS_ENABLED,
+};
+
+/*
+ * NOT LISTED below, and not touched by Linux
+ * - in SyncReset state by default
+ * .lpsc = DAVINCI_LPSC_TPCC,
+ * .lpsc = DAVINCI_LPSC_TPTC0,
+ * .lpsc = DAVINCI_LPSC_TPTC1,
+ * .lpsc = DAVINCI_LPSC_DDR_EMIF, .parent = &sysclk2_clk,
+ * .lpsc = DAVINCI_LPSC_MEMSTICK,
+ * - in Enabled state by default
+ * .lpsc = DAVINCI_LPSC_SYSTEM_SUBSYS,
+ * .lpsc = DAVINCI_LPSC_SCR2, // "bus"
+ * .lpsc = DAVINCI_LPSC_SCR3, // "bus"
+ * .lpsc = DAVINCI_LPSC_SCR4, // "bus"
+ * .lpsc = DAVINCI_LPSC_CROSSBAR, // "emulation"
+ * .lpsc = DAVINCI_LPSC_CFG27, // "test"
+ * .lpsc = DAVINCI_LPSC_CFG3, // "test"
+ * .lpsc = DAVINCI_LPSC_CFG5, // "test"
+ */
+
+static struct clk mjcp_clk = {
+ .name = "mjcp",
+ .parent = &pll1_sysclk1,
+ .lpsc = DAVINCI_LPSC_IMCOP,
+};
+
+static struct clk uart0_clk = {
+ .name = "uart0",
+ .parent = &pll1_aux_clk,
+ .lpsc = DAVINCI_LPSC_UART0,
+};
+
+static struct clk uart1_clk = {
+ .name = "uart1",
+ .parent = &pll1_aux_clk,
+ .lpsc = DAVINCI_LPSC_UART1,
+};
+
+static struct clk uart2_clk = {
+ .name = "uart2",
+ .parent = &pll1_sysclk2,
+ .lpsc = DAVINCI_LPSC_UART2,
+};
+
+static struct clk i2c_clk = {
+ .name = "i2c",
+ .parent = &pll1_aux_clk,
+ .lpsc = DAVINCI_LPSC_I2C,
+};
+
+static struct clk asp0_clk = {
+ .name = "asp0",
+ .parent = &pll1_sysclk2,
+ .lpsc = DAVINCI_LPSC_McBSP,
+};
+
+static struct clk asp1_clk = {
+ .name = "asp1",
+ .parent = &pll1_sysclk2,
+ .lpsc = DM355_LPSC_McBSP1,
+};
+
+static struct clk mmcsd0_clk = {
+ .name = "mmcsd0",
+ .parent = &pll1_sysclk2,
+ .lpsc = DAVINCI_LPSC_MMC_SD,
+};
+
+static struct clk mmcsd1_clk = {
+ .name = "mmcsd1",
+ .parent = &pll1_sysclk2,
+ .lpsc = DM355_LPSC_MMC_SD1,
+};
+
+static struct clk spi0_clk = {
+ .name = "spi0",
+ .parent = &pll1_sysclk2,
+ .lpsc = DAVINCI_LPSC_SPI,
+};
+
+static struct clk spi1_clk = {
+ .name = "spi1",
+ .parent = &pll1_sysclk2,
+ .lpsc = DM355_LPSC_SPI1,
+};
+
+static struct clk spi2_clk = {
+ .name = "spi2",
+ .parent = &pll1_sysclk2,
+ .lpsc = DM355_LPSC_SPI2,
+};
+
+static struct clk gpio_clk = {
+ .name = "gpio",
+ .parent = &pll1_sysclk2,
+ .lpsc = DAVINCI_LPSC_GPIO,
+};
+
+static struct clk aemif_clk = {
+ .name = "aemif",
+ .parent = &pll1_sysclk2,
+ .lpsc = DAVINCI_LPSC_AEMIF,
+};
+
+static struct clk pwm0_clk = {
+ .name = "pwm0",
+ .parent = &pll1_aux_clk,
+ .lpsc = DAVINCI_LPSC_PWM0,
+};
+
+static struct clk pwm1_clk = {
+ .name = "pwm1",
+ .parent = &pll1_aux_clk,
+ .lpsc = DAVINCI_LPSC_PWM1,
+};
+
+static struct clk pwm2_clk = {
+ .name = "pwm2",
+ .parent = &pll1_aux_clk,
+ .lpsc = DAVINCI_LPSC_PWM2,
+};
+
+static struct clk pwm3_clk = {
+ .name = "pwm3",
+ .parent = &pll1_aux_clk,
+ .lpsc = DM355_LPSC_PWM3,
+};
+
+static struct clk timer0_clk = {
+ .name = "timer0",
+ .parent = &pll1_aux_clk,
+ .lpsc = DAVINCI_LPSC_TIMER0,
+};
+
+static struct clk timer1_clk = {
+ .name = "timer1",
+ .parent = &pll1_aux_clk,
+ .lpsc = DAVINCI_LPSC_TIMER1,
+};
+
+static struct clk timer2_clk = {
+ .name = "timer2",
+ .parent = &pll1_aux_clk,
+ .lpsc = DAVINCI_LPSC_TIMER2,
+ .usecount = 1, /* REVISIT: why cant' this be disabled? */
+};
+
+static struct clk timer3_clk = {
+ .name = "timer3",
+ .parent = &pll1_aux_clk,
+ .lpsc = DM355_LPSC_TIMER3,
+};
+
+static struct clk rto_clk = {
+ .name = "rto",
+ .parent = &pll1_aux_clk,
+ .lpsc = DM355_LPSC_RTO,
+};
+
+static struct clk usb_clk = {
+ .name = "usb",
+ .parent = &pll1_sysclk2,
+ .lpsc = DAVINCI_LPSC_USB,
+};
+
+static struct davinci_clk dm355_clks[] = {
+ CLK(NULL, "ref", &ref_clk),
+ CLK(NULL, "pll1", &pll1_clk),
+ CLK(NULL, "pll1_sysclk1", &pll1_sysclk1),
+ CLK(NULL, "pll1_sysclk2", &pll1_sysclk2),
+ CLK(NULL, "pll1_sysclk3", &pll1_sysclk3),
+ CLK(NULL, "pll1_sysclk4", &pll1_sysclk4),
+ CLK(NULL, "pll1_aux", &pll1_aux_clk),
+ CLK(NULL, "pll1_sysclkbp", &pll1_sysclkbp),
+ CLK(NULL, "vpss_dac", &vpss_dac_clk),
+ CLK(NULL, "vpss_master", &vpss_master_clk),
+ CLK(NULL, "vpss_slave", &vpss_slave_clk),
+ CLK(NULL, "clkout1", &clkout1_clk),
+ CLK(NULL, "clkout2", &clkout2_clk),
+ CLK(NULL, "pll2", &pll2_clk),
+ CLK(NULL, "pll2_sysclk1", &pll2_sysclk1),
+ CLK(NULL, "pll2_sysclkbp", &pll2_sysclkbp),
+ CLK(NULL, "clkout3", &clkout3_clk),
+ CLK(NULL, "arm", &arm_clk),
+ CLK(NULL, "mjcp", &mjcp_clk),
+ CLK(NULL, "uart0", &uart0_clk),
+ CLK(NULL, "uart1", &uart1_clk),
+ CLK(NULL, "uart2", &uart2_clk),
+ CLK("i2c_davinci.1", NULL, &i2c_clk),
+ CLK("soc-audio.0", NULL, &asp0_clk),
+ CLK("soc-audio.1", NULL, &asp1_clk),
+ CLK("davinci_mmc.0", NULL, &mmcsd0_clk),
+ CLK("davinci_mmc.1", NULL, &mmcsd1_clk),
+ CLK(NULL, "spi0", &spi0_clk),
+ CLK(NULL, "spi1", &spi1_clk),
+ CLK(NULL, "spi2", &spi2_clk),
+ CLK(NULL, "gpio", &gpio_clk),
+ CLK(NULL, "aemif", &aemif_clk),
+ CLK(NULL, "pwm0", &pwm0_clk),
+ CLK(NULL, "pwm1", &pwm1_clk),
+ CLK(NULL, "pwm2", &pwm2_clk),
+ CLK(NULL, "pwm3", &pwm3_clk),
+ CLK(NULL, "timer0", &timer0_clk),
+ CLK(NULL, "timer1", &timer1_clk),
+ CLK("watchdog", NULL, &timer2_clk),
+ CLK(NULL, "timer3", &timer3_clk),
+ CLK(NULL, "rto", &rto_clk),
+ CLK(NULL, "usb", &usb_clk),
+ CLK(NULL, NULL, NULL),
+};
+
+/*----------------------------------------------------------------------*/
+
+static u64 dm355_spi0_dma_mask = DMA_BIT_MASK(32);
+
+static struct resource dm355_spi0_resources[] = {
+ {
+ .start = 0x01c66000,
+ .end = 0x01c667ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_DM355_SPINT0_1,
+ .flags = IORESOURCE_IRQ,
+ },
+ /* Not yet used, so not included:
+ * IORESOURCE_IRQ:
+ * - IRQ_DM355_SPINT0_0
+ * IORESOURCE_DMA:
+ * - DAVINCI_DMA_SPI_SPIX
+ * - DAVINCI_DMA_SPI_SPIR
+ */
+};
+
+static struct platform_device dm355_spi0_device = {
+ .name = "spi_davinci",
+ .id = 0,
+ .dev = {
+ .dma_mask = &dm355_spi0_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+ .num_resources = ARRAY_SIZE(dm355_spi0_resources),
+ .resource = dm355_spi0_resources,
+};
+
+void __init dm355_init_spi0(unsigned chipselect_mask,
+ struct spi_board_info *info, unsigned len)
+{
+ /* for now, assume we need MISO */
+ davinci_cfg_reg(DM355_SPI0_SDI);
+
+ /* not all slaves will be wired up */
+ if (chipselect_mask & BIT(0))
+ davinci_cfg_reg(DM355_SPI0_SDENA0);
+ if (chipselect_mask & BIT(1))
+ davinci_cfg_reg(DM355_SPI0_SDENA1);
+
+ spi_register_board_info(info, len);
+
+ platform_device_register(&dm355_spi0_device);
+}
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * Device specific mux setup
+ *
+ * soc description mux mode mode mux dbg
+ * reg offset mask mode
+ */
+static const struct mux_config dm355_pins[] = {
+MUX_CFG(DM355, MMCSD0, 4, 2, 1, 0, false)
+
+MUX_CFG(DM355, SD1_CLK, 3, 6, 1, 1, false)
+MUX_CFG(DM355, SD1_CMD, 3, 7, 1, 1, false)
+MUX_CFG(DM355, SD1_DATA3, 3, 8, 3, 1, false)
+MUX_CFG(DM355, SD1_DATA2, 3, 10, 3, 1, false)
+MUX_CFG(DM355, SD1_DATA1, 3, 12, 3, 1, false)
+MUX_CFG(DM355, SD1_DATA0, 3, 14, 3, 1, false)
+
+MUX_CFG(DM355, I2C_SDA, 3, 19, 1, 1, false)
+MUX_CFG(DM355, I2C_SCL, 3, 20, 1, 1, false)
+
+MUX_CFG(DM355, MCBSP0_BDX, 3, 0, 1, 1, false)
+MUX_CFG(DM355, MCBSP0_X, 3, 1, 1, 1, false)
+MUX_CFG(DM355, MCBSP0_BFSX, 3, 2, 1, 1, false)
+MUX_CFG(DM355, MCBSP0_BDR, 3, 3, 1, 1, false)
+MUX_CFG(DM355, MCBSP0_R, 3, 4, 1, 1, false)
+MUX_CFG(DM355, MCBSP0_BFSR, 3, 5, 1, 1, false)
+
+MUX_CFG(DM355, SPI0_SDI, 4, 1, 1, 0, false)
+MUX_CFG(DM355, SPI0_SDENA0, 4, 0, 1, 0, false)
+MUX_CFG(DM355, SPI0_SDENA1, 3, 28, 1, 1, false)
+
+INT_CFG(DM355, INT_EDMA_CC, 2, 1, 1, false)
+INT_CFG(DM355, INT_EDMA_TC0_ERR, 3, 1, 1, false)
+INT_CFG(DM355, INT_EDMA_TC1_ERR, 4, 1, 1, false)
+
+EVT_CFG(DM355, EVT8_ASP1_TX, 0, 1, 0, false)
+EVT_CFG(DM355, EVT9_ASP1_RX, 1, 1, 0, false)
+EVT_CFG(DM355, EVT26_MMC0_RX, 2, 1, 0, false)
+};
+
+/*----------------------------------------------------------------------*/
+
+static const s8 dma_chan_dm355_no_event[] = {
+ 12, 13, 24, 56, 57,
+ 58, 59, 60, 61, 62,
+ 63,
+ -1
+};
+
+static struct edma_soc_info dm355_edma_info = {
+ .n_channel = 64,
+ .n_region = 4,
+ .n_slot = 128,
+ .n_tc = 2,
+ .noevent = dma_chan_dm355_no_event,
+};
+
+static struct resource edma_resources[] = {
+ {
+ .name = "edma_cc",
+ .start = 0x01c00000,
+ .end = 0x01c00000 + SZ_64K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "edma_tc0",
+ .start = 0x01c10000,
+ .end = 0x01c10000 + SZ_1K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "edma_tc1",
+ .start = 0x01c10400,
+ .end = 0x01c10400 + SZ_1K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_CCINT0,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .start = IRQ_CCERRINT,
+ .flags = IORESOURCE_IRQ,
+ },
+ /* not using (or muxing) TC*_ERR */
+};
+
+static struct platform_device dm355_edma_device = {
+ .name = "edma",
+ .id = -1,
+ .dev.platform_data = &dm355_edma_info,
+ .num_resources = ARRAY_SIZE(edma_resources),
+ .resource = edma_resources,
+};
+
+/*----------------------------------------------------------------------*/
+
+void __init dm355_init(void)
+{
+ davinci_clk_init(dm355_clks);
+ davinci_mux_register(dm355_pins, ARRAY_SIZE(dm355_pins));;
+}
+
+static int __init dm355_init_devices(void)
+{
+ if (!cpu_is_davinci_dm355())
+ return 0;
+
+ davinci_cfg_reg(DM355_INT_EDMA_CC);
+ platform_device_register(&dm355_edma_device);
+ return 0;
+}
+postcore_initcall(dm355_init_devices);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-10 03:13:47 +0000