2 * arch/arm/mach-kirkwood/common.c
4 * Core functions for Marvell Kirkwood SoCs
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2. This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/platform_device.h>
14 #include <linux/serial_8250.h>
15 #include <linux/ata_platform.h>
16 #include <linux/mtd/nand.h>
17 #include <linux/dma-mapping.h>
18 #include <linux/clk-provider.h>
19 #include <linux/spinlock.h>
22 #include <asm/timex.h>
23 #include <asm/kexec.h>
24 #include <asm/mach/map.h>
25 #include <asm/mach/time.h>
26 #include <mach/kirkwood.h>
27 #include <mach/bridge-regs.h>
28 #include <plat/audio.h>
29 #include <plat/cache-feroceon-l2.h>
30 #include <plat/mvsdio.h>
31 #include <plat/orion_nand.h>
32 #include <plat/ehci-orion.h>
33 #include <plat/common.h>
34 #include <plat/time.h>
35 #include <plat/addr-map.h>
36 #include <plat/mv_xor.h>
39 /*****************************************************************************
41 ****************************************************************************/
42 static struct map_desc kirkwood_io_desc[] __initdata = {
44 .virtual = KIRKWOOD_PCIE_IO_VIRT_BASE,
45 .pfn = __phys_to_pfn(KIRKWOOD_PCIE_IO_PHYS_BASE),
46 .length = KIRKWOOD_PCIE_IO_SIZE,
49 .virtual = KIRKWOOD_PCIE1_IO_VIRT_BASE,
50 .pfn = __phys_to_pfn(KIRKWOOD_PCIE1_IO_PHYS_BASE),
51 .length = KIRKWOOD_PCIE1_IO_SIZE,
54 .virtual = KIRKWOOD_REGS_VIRT_BASE,
55 .pfn = __phys_to_pfn(KIRKWOOD_REGS_PHYS_BASE),
56 .length = KIRKWOOD_REGS_SIZE,
61 void __init kirkwood_map_io(void)
63 iotable_init(kirkwood_io_desc, ARRAY_SIZE(kirkwood_io_desc));
66 /*****************************************************************************
68 ****************************************************************************/
70 static void disable_sata0(void)
72 /* Disable PLL and IVREF */
73 writel(readl(SATA0_PHY_MODE_2) & ~0xf, SATA0_PHY_MODE_2);
75 writel(readl(SATA0_IF_CTRL) | 0x200, SATA0_IF_CTRL);
78 static void disable_sata1(void)
80 /* Disable PLL and IVREF */
81 writel(readl(SATA1_PHY_MODE_2) & ~0xf, SATA1_PHY_MODE_2);
83 writel(readl(SATA1_IF_CTRL) | 0x200, SATA1_IF_CTRL);
86 static void disable_pcie0(void)
88 writel(readl(PCIE_LINK_CTRL) | 0x10, PCIE_LINK_CTRL);
90 if (readl(PCIE_STATUS) & 0x1)
92 writel(readl(PCIE_LINK_CTRL) & ~0x10, PCIE_LINK_CTRL);
95 static void disable_pcie1(void)
99 kirkwood_pcie_id(&dev, &rev);
101 if (dev == MV88F6282_DEV_ID) {
102 writel(readl(PCIE1_LINK_CTRL) | 0x10, PCIE1_LINK_CTRL);
104 if (readl(PCIE1_STATUS) & 0x1)
106 writel(readl(PCIE1_LINK_CTRL) & ~0x10, PCIE1_LINK_CTRL);
110 /* An extended version of the gated clk. This calls fn() before
111 * disabling the clock. We use this to turn off PHYs etc. */
113 struct clk_gate gate;
117 #define to_clk_gate_fn(_gate) container_of(_gate, struct clk_gate_fn, gate)
118 #define to_clk_gate(_hw) container_of(_hw, struct clk_gate, hw)
120 static void clk_gate_fn_disable(struct clk_hw *hw)
122 struct clk_gate *gate = to_clk_gate(hw);
123 struct clk_gate_fn *gate_fn = to_clk_gate_fn(gate);
128 clk_gate_ops.disable(hw);
131 static struct clk_ops clk_gate_fn_ops;
133 static struct clk __init *clk_register_gate_fn(struct device *dev,
135 const char *parent_name, unsigned long flags,
136 void __iomem *reg, u8 bit_idx,
137 u8 clk_gate_flags, spinlock_t *lock,
140 struct clk_gate_fn *gate_fn;
142 struct clk_init_data init;
144 gate_fn = kzalloc(sizeof(struct clk_gate_fn), GFP_KERNEL);
146 pr_err("%s: could not allocate gated clk\n", __func__);
147 return ERR_PTR(-ENOMEM);
151 init.ops = &clk_gate_fn_ops;
153 init.parent_names = (parent_name ? &parent_name : NULL);
154 init.num_parents = (parent_name ? 1 : 0);
156 /* struct clk_gate assignments */
157 gate_fn->gate.reg = reg;
158 gate_fn->gate.bit_idx = bit_idx;
159 gate_fn->gate.flags = clk_gate_flags;
160 gate_fn->gate.lock = lock;
161 gate_fn->gate.hw.init = &init;
163 /* ops is the gate ops, but with our disable function */
164 if (clk_gate_fn_ops.disable != clk_gate_fn_disable) {
165 clk_gate_fn_ops = clk_gate_ops;
166 clk_gate_fn_ops.disable = clk_gate_fn_disable;
169 clk = clk_register(dev, &gate_fn->gate.hw);
177 static DEFINE_SPINLOCK(gating_lock);
178 static struct clk *tclk;
180 static struct clk __init *kirkwood_register_gate(const char *name, u8 bit_idx)
182 return clk_register_gate(NULL, name, "tclk", 0,
183 (void __iomem *)CLOCK_GATING_CTRL,
184 bit_idx, 0, &gating_lock);
187 static struct clk __init *kirkwood_register_gate_fn(const char *name,
191 return clk_register_gate_fn(NULL, name, "tclk", 0,
192 (void __iomem *)CLOCK_GATING_CTRL,
193 bit_idx, 0, &gating_lock, fn);
196 void __init kirkwood_clk_init(void)
198 struct clk *runit, *ge0, *ge1, *sata0, *sata1, *usb0, *sdio;
199 struct clk *crypto, *xor0, *xor1, *pex0, *pex1, *audio;
201 tclk = clk_register_fixed_rate(NULL, "tclk", NULL,
202 CLK_IS_ROOT, kirkwood_tclk);
204 runit = kirkwood_register_gate("runit", CGC_BIT_RUNIT);
205 ge0 = kirkwood_register_gate("ge0", CGC_BIT_GE0);
206 ge1 = kirkwood_register_gate("ge1", CGC_BIT_GE1);
207 sata0 = kirkwood_register_gate_fn("sata0", CGC_BIT_SATA0,
209 sata1 = kirkwood_register_gate_fn("sata1", CGC_BIT_SATA1,
211 usb0 = kirkwood_register_gate("usb0", CGC_BIT_USB0);
212 sdio = kirkwood_register_gate("sdio", CGC_BIT_SDIO);
213 crypto = kirkwood_register_gate("crypto", CGC_BIT_CRYPTO);
214 xor0 = kirkwood_register_gate("xor0", CGC_BIT_XOR0);
215 xor1 = kirkwood_register_gate("xor1", CGC_BIT_XOR1);
216 pex0 = kirkwood_register_gate_fn("pex0", CGC_BIT_PEX0,
218 pex1 = kirkwood_register_gate_fn("pex1", CGC_BIT_PEX1,
220 audio = kirkwood_register_gate("audio", CGC_BIT_AUDIO);
221 kirkwood_register_gate("tdm", CGC_BIT_TDM);
222 kirkwood_register_gate("tsu", CGC_BIT_TSU);
224 /* clkdev entries, mapping clks to devices */
225 orion_clkdev_add(NULL, "orion_spi.0", runit);
226 orion_clkdev_add(NULL, "orion_spi.1", runit);
227 orion_clkdev_add(NULL, MV643XX_ETH_NAME ".0", ge0);
228 orion_clkdev_add(NULL, MV643XX_ETH_NAME ".1", ge1);
229 orion_clkdev_add(NULL, "orion_wdt", tclk);
230 orion_clkdev_add("0", "sata_mv.0", sata0);
231 orion_clkdev_add("1", "sata_mv.0", sata1);
232 orion_clkdev_add(NULL, "orion-ehci.0", usb0);
233 orion_clkdev_add(NULL, "orion_nand", runit);
234 orion_clkdev_add(NULL, "mvsdio", sdio);
235 orion_clkdev_add(NULL, "mv_crypto", crypto);
236 orion_clkdev_add(NULL, MV_XOR_SHARED_NAME ".0", xor0);
237 orion_clkdev_add(NULL, MV_XOR_SHARED_NAME ".1", xor1);
238 orion_clkdev_add("0", "pcie", pex0);
239 orion_clkdev_add("1", "pcie", pex1);
240 orion_clkdev_add(NULL, "kirkwood-i2s", audio);
243 /*****************************************************************************
245 ****************************************************************************/
246 void __init kirkwood_ehci_init(void)
248 orion_ehci_init(USB_PHYS_BASE, IRQ_KIRKWOOD_USB, EHCI_PHY_NA);
252 /*****************************************************************************
254 ****************************************************************************/
255 void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data)
257 orion_ge00_init(eth_data,
258 GE00_PHYS_BASE, IRQ_KIRKWOOD_GE00_SUM,
259 IRQ_KIRKWOOD_GE00_ERR);
263 /*****************************************************************************
265 ****************************************************************************/
266 void __init kirkwood_ge01_init(struct mv643xx_eth_platform_data *eth_data)
268 orion_ge01_init(eth_data,
269 GE01_PHYS_BASE, IRQ_KIRKWOOD_GE01_SUM,
270 IRQ_KIRKWOOD_GE01_ERR);
274 /*****************************************************************************
276 ****************************************************************************/
277 void __init kirkwood_ge00_switch_init(struct dsa_platform_data *d, int irq)
279 orion_ge00_switch_init(d, irq);
283 /*****************************************************************************
285 ****************************************************************************/
286 static struct resource kirkwood_nand_resource = {
287 .flags = IORESOURCE_MEM,
288 .start = KIRKWOOD_NAND_MEM_PHYS_BASE,
289 .end = KIRKWOOD_NAND_MEM_PHYS_BASE +
290 KIRKWOOD_NAND_MEM_SIZE - 1,
293 static struct orion_nand_data kirkwood_nand_data = {
299 static struct platform_device kirkwood_nand_flash = {
300 .name = "orion_nand",
303 .platform_data = &kirkwood_nand_data,
305 .resource = &kirkwood_nand_resource,
309 void __init kirkwood_nand_init(struct mtd_partition *parts, int nr_parts,
312 kirkwood_nand_data.parts = parts;
313 kirkwood_nand_data.nr_parts = nr_parts;
314 kirkwood_nand_data.chip_delay = chip_delay;
315 platform_device_register(&kirkwood_nand_flash);
318 void __init kirkwood_nand_init_rnb(struct mtd_partition *parts, int nr_parts,
319 int (*dev_ready)(struct mtd_info *))
321 kirkwood_nand_data.parts = parts;
322 kirkwood_nand_data.nr_parts = nr_parts;
323 kirkwood_nand_data.dev_ready = dev_ready;
324 platform_device_register(&kirkwood_nand_flash);
327 /*****************************************************************************
329 ****************************************************************************/
330 static void __init kirkwood_rtc_init(void)
332 orion_rtc_init(RTC_PHYS_BASE, IRQ_KIRKWOOD_RTC);
336 /*****************************************************************************
338 ****************************************************************************/
339 void __init kirkwood_sata_init(struct mv_sata_platform_data *sata_data)
341 orion_sata_init(sata_data, SATA_PHYS_BASE, IRQ_KIRKWOOD_SATA);
345 /*****************************************************************************
347 ****************************************************************************/
348 static struct resource mvsdio_resources[] = {
350 .start = SDIO_PHYS_BASE,
351 .end = SDIO_PHYS_BASE + SZ_1K - 1,
352 .flags = IORESOURCE_MEM,
355 .start = IRQ_KIRKWOOD_SDIO,
356 .end = IRQ_KIRKWOOD_SDIO,
357 .flags = IORESOURCE_IRQ,
361 static u64 mvsdio_dmamask = DMA_BIT_MASK(32);
363 static struct platform_device kirkwood_sdio = {
367 .dma_mask = &mvsdio_dmamask,
368 .coherent_dma_mask = DMA_BIT_MASK(32),
370 .num_resources = ARRAY_SIZE(mvsdio_resources),
371 .resource = mvsdio_resources,
374 void __init kirkwood_sdio_init(struct mvsdio_platform_data *mvsdio_data)
378 kirkwood_pcie_id(&dev, &rev);
379 if (rev == 0 && dev != MV88F6282_DEV_ID) /* catch all Kirkwood Z0's */
380 mvsdio_data->clock = 100000000;
382 mvsdio_data->clock = 200000000;
383 kirkwood_sdio.dev.platform_data = mvsdio_data;
384 platform_device_register(&kirkwood_sdio);
388 /*****************************************************************************
390 ****************************************************************************/
391 void __init kirkwood_spi_init()
393 orion_spi_init(SPI_PHYS_BASE);
397 /*****************************************************************************
399 ****************************************************************************/
400 void __init kirkwood_i2c_init(void)
402 orion_i2c_init(I2C_PHYS_BASE, IRQ_KIRKWOOD_TWSI, 8);
406 /*****************************************************************************
408 ****************************************************************************/
410 void __init kirkwood_uart0_init(void)
412 orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE,
413 IRQ_KIRKWOOD_UART_0, tclk);
417 /*****************************************************************************
419 ****************************************************************************/
420 void __init kirkwood_uart1_init(void)
422 orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE,
423 IRQ_KIRKWOOD_UART_1, tclk);
426 /*****************************************************************************
427 * Cryptographic Engines and Security Accelerator (CESA)
428 ****************************************************************************/
429 void __init kirkwood_crypto_init(void)
431 orion_crypto_init(CRYPTO_PHYS_BASE, KIRKWOOD_SRAM_PHYS_BASE,
432 KIRKWOOD_SRAM_SIZE, IRQ_KIRKWOOD_CRYPTO);
436 /*****************************************************************************
438 ****************************************************************************/
439 void __init kirkwood_xor0_init(void)
441 orion_xor0_init(XOR0_PHYS_BASE, XOR0_HIGH_PHYS_BASE,
442 IRQ_KIRKWOOD_XOR_00, IRQ_KIRKWOOD_XOR_01);
446 /*****************************************************************************
448 ****************************************************************************/
449 void __init kirkwood_xor1_init(void)
451 orion_xor1_init(XOR1_PHYS_BASE, XOR1_HIGH_PHYS_BASE,
452 IRQ_KIRKWOOD_XOR_10, IRQ_KIRKWOOD_XOR_11);
456 /*****************************************************************************
458 ****************************************************************************/
459 void __init kirkwood_wdt_init(void)
465 /*****************************************************************************
467 ****************************************************************************/
468 void __init kirkwood_init_early(void)
470 orion_time_set_base(TIMER_VIRT_BASE);
475 static int __init kirkwood_find_tclk(void)
479 kirkwood_pcie_id(&dev, &rev);
481 if (dev == MV88F6281_DEV_ID || dev == MV88F6282_DEV_ID)
482 if (((readl(SAMPLE_AT_RESET) >> 21) & 1) == 0)
488 static void __init kirkwood_timer_init(void)
490 kirkwood_tclk = kirkwood_find_tclk();
492 orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
493 IRQ_KIRKWOOD_BRIDGE, kirkwood_tclk);
496 struct sys_timer kirkwood_timer = {
497 .init = kirkwood_timer_init,
500 /*****************************************************************************
502 ****************************************************************************/
503 static struct resource kirkwood_i2s_resources[] = {
505 .start = AUDIO_PHYS_BASE,
506 .end = AUDIO_PHYS_BASE + SZ_16K - 1,
507 .flags = IORESOURCE_MEM,
510 .start = IRQ_KIRKWOOD_I2S,
511 .end = IRQ_KIRKWOOD_I2S,
512 .flags = IORESOURCE_IRQ,
516 static struct kirkwood_asoc_platform_data kirkwood_i2s_data = {
520 static struct platform_device kirkwood_i2s_device = {
521 .name = "kirkwood-i2s",
523 .num_resources = ARRAY_SIZE(kirkwood_i2s_resources),
524 .resource = kirkwood_i2s_resources,
526 .platform_data = &kirkwood_i2s_data,
530 static struct platform_device kirkwood_pcm_device = {
531 .name = "kirkwood-pcm-audio",
535 void __init kirkwood_audio_init(void)
537 platform_device_register(&kirkwood_i2s_device);
538 platform_device_register(&kirkwood_pcm_device);
541 /*****************************************************************************
543 ****************************************************************************/
545 * Identify device ID and revision.
547 char * __init kirkwood_id(void)
551 kirkwood_pcie_id(&dev, &rev);
553 if (dev == MV88F6281_DEV_ID) {
554 if (rev == MV88F6281_REV_Z0)
555 return "MV88F6281-Z0";
556 else if (rev == MV88F6281_REV_A0)
557 return "MV88F6281-A0";
558 else if (rev == MV88F6281_REV_A1)
559 return "MV88F6281-A1";
561 return "MV88F6281-Rev-Unsupported";
562 } else if (dev == MV88F6192_DEV_ID) {
563 if (rev == MV88F6192_REV_Z0)
564 return "MV88F6192-Z0";
565 else if (rev == MV88F6192_REV_A0)
566 return "MV88F6192-A0";
567 else if (rev == MV88F6192_REV_A1)
568 return "MV88F6192-A1";
570 return "MV88F6192-Rev-Unsupported";
571 } else if (dev == MV88F6180_DEV_ID) {
572 if (rev == MV88F6180_REV_A0)
573 return "MV88F6180-Rev-A0";
574 else if (rev == MV88F6180_REV_A1)
575 return "MV88F6180-Rev-A1";
577 return "MV88F6180-Rev-Unsupported";
578 } else if (dev == MV88F6282_DEV_ID) {
579 if (rev == MV88F6282_REV_A0)
580 return "MV88F6282-Rev-A0";
581 else if (rev == MV88F6282_REV_A1)
582 return "MV88F6282-Rev-A1";
584 return "MV88F6282-Rev-Unsupported";
586 return "Device-Unknown";
590 void __init kirkwood_l2_init(void)
592 #ifdef CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH
593 writel(readl(L2_CONFIG_REG) | L2_WRITETHROUGH, L2_CONFIG_REG);
596 writel(readl(L2_CONFIG_REG) & ~L2_WRITETHROUGH, L2_CONFIG_REG);
601 void __init kirkwood_init(void)
603 printk(KERN_INFO "Kirkwood: %s, TCLK=%d.\n",
604 kirkwood_id(), kirkwood_tclk);
607 * Disable propagation of mbus errors to the CPU local bus,
608 * as this causes mbus errors (which can occur for example
609 * for PCI aborts) to throw CPU aborts, which we're not set
612 writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG);
614 kirkwood_setup_cpu_mbus();
616 #ifdef CONFIG_CACHE_FEROCEON_L2
620 /* Setup root of clk tree */
623 /* internal devices that every board has */
626 kirkwood_xor0_init();
627 kirkwood_xor1_init();
628 kirkwood_crypto_init();
631 kexec_reinit = kirkwood_enable_pcie;
635 void kirkwood_restart(char mode, const char *cmd)
638 * Enable soft reset to assert RSTOUTn.
640 writel(SOFT_RESET_OUT_EN, RSTOUTn_MASK);
645 writel(SOFT_RESET, SYSTEM_SOFT_RESET);