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;
164 /* ops is the gate ops, but with our disable function */
165 if (clk_gate_fn_ops.disable != clk_gate_fn_disable) {
166 clk_gate_fn_ops = clk_gate_ops;
167 clk_gate_fn_ops.disable = clk_gate_fn_disable;
170 clk = clk_register(dev, &gate_fn->gate.hw);
178 static DEFINE_SPINLOCK(gating_lock);
179 static struct clk *tclk;
181 static struct clk __init *kirkwood_register_gate(const char *name, u8 bit_idx)
183 return clk_register_gate(NULL, name, "tclk", 0,
184 (void __iomem *)CLOCK_GATING_CTRL,
185 bit_idx, 0, &gating_lock);
188 static struct clk __init *kirkwood_register_gate_fn(const char *name,
192 return clk_register_gate_fn(NULL, name, "tclk", 0,
193 (void __iomem *)CLOCK_GATING_CTRL,
194 bit_idx, 0, &gating_lock, fn);
197 static struct clk *ge0, *ge1;
199 void __init kirkwood_clk_init(void)
201 struct clk *runit, *sata0, *sata1, *usb0, *sdio;
202 struct clk *crypto, *xor0, *xor1, *pex0, *pex1, *audio;
204 tclk = clk_register_fixed_rate(NULL, "tclk", NULL,
205 CLK_IS_ROOT, kirkwood_tclk);
207 runit = kirkwood_register_gate("runit", CGC_BIT_RUNIT);
208 ge0 = kirkwood_register_gate("ge0", CGC_BIT_GE0);
209 ge1 = kirkwood_register_gate("ge1", CGC_BIT_GE1);
210 sata0 = kirkwood_register_gate_fn("sata0", CGC_BIT_SATA0,
212 sata1 = kirkwood_register_gate_fn("sata1", CGC_BIT_SATA1,
214 usb0 = kirkwood_register_gate("usb0", CGC_BIT_USB0);
215 sdio = kirkwood_register_gate("sdio", CGC_BIT_SDIO);
216 crypto = kirkwood_register_gate("crypto", CGC_BIT_CRYPTO);
217 xor0 = kirkwood_register_gate("xor0", CGC_BIT_XOR0);
218 xor1 = kirkwood_register_gate("xor1", CGC_BIT_XOR1);
219 pex0 = kirkwood_register_gate_fn("pex0", CGC_BIT_PEX0,
221 pex1 = kirkwood_register_gate_fn("pex1", CGC_BIT_PEX1,
223 audio = kirkwood_register_gate("audio", CGC_BIT_AUDIO);
224 kirkwood_register_gate("tdm", CGC_BIT_TDM);
225 kirkwood_register_gate("tsu", CGC_BIT_TSU);
227 /* clkdev entries, mapping clks to devices */
228 orion_clkdev_add(NULL, "orion_spi.0", runit);
229 orion_clkdev_add(NULL, "orion_spi.1", runit);
230 orion_clkdev_add(NULL, MV643XX_ETH_NAME ".0", ge0);
231 orion_clkdev_add(NULL, MV643XX_ETH_NAME ".1", ge1);
232 orion_clkdev_add(NULL, "orion_wdt", tclk);
233 orion_clkdev_add("0", "sata_mv.0", sata0);
234 orion_clkdev_add("1", "sata_mv.0", sata1);
235 orion_clkdev_add(NULL, "orion-ehci.0", usb0);
236 orion_clkdev_add(NULL, "orion_nand", runit);
237 orion_clkdev_add(NULL, "mvsdio", sdio);
238 orion_clkdev_add(NULL, "mv_crypto", crypto);
239 orion_clkdev_add(NULL, MV_XOR_SHARED_NAME ".0", xor0);
240 orion_clkdev_add(NULL, MV_XOR_SHARED_NAME ".1", xor1);
241 orion_clkdev_add("0", "pcie", pex0);
242 orion_clkdev_add("1", "pcie", pex1);
243 orion_clkdev_add(NULL, "kirkwood-i2s", audio);
246 /*****************************************************************************
248 ****************************************************************************/
249 void __init kirkwood_ehci_init(void)
251 orion_ehci_init(USB_PHYS_BASE, IRQ_KIRKWOOD_USB, EHCI_PHY_NA);
255 /*****************************************************************************
257 ****************************************************************************/
258 void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data)
260 orion_ge00_init(eth_data,
261 GE00_PHYS_BASE, IRQ_KIRKWOOD_GE00_SUM,
262 IRQ_KIRKWOOD_GE00_ERR);
263 /* The interface forgets the MAC address assigned by u-boot if
264 the clock is turned off, so claim the clk now. */
265 clk_prepare_enable(ge0);
269 /*****************************************************************************
271 ****************************************************************************/
272 void __init kirkwood_ge01_init(struct mv643xx_eth_platform_data *eth_data)
274 orion_ge01_init(eth_data,
275 GE01_PHYS_BASE, IRQ_KIRKWOOD_GE01_SUM,
276 IRQ_KIRKWOOD_GE01_ERR);
277 clk_prepare_enable(ge1);
281 /*****************************************************************************
283 ****************************************************************************/
284 void __init kirkwood_ge00_switch_init(struct dsa_platform_data *d, int irq)
286 orion_ge00_switch_init(d, irq);
290 /*****************************************************************************
292 ****************************************************************************/
293 static struct resource kirkwood_nand_resource = {
294 .flags = IORESOURCE_MEM,
295 .start = KIRKWOOD_NAND_MEM_PHYS_BASE,
296 .end = KIRKWOOD_NAND_MEM_PHYS_BASE +
297 KIRKWOOD_NAND_MEM_SIZE - 1,
300 static struct orion_nand_data kirkwood_nand_data = {
306 static struct platform_device kirkwood_nand_flash = {
307 .name = "orion_nand",
310 .platform_data = &kirkwood_nand_data,
312 .resource = &kirkwood_nand_resource,
316 void __init kirkwood_nand_init(struct mtd_partition *parts, int nr_parts,
319 kirkwood_nand_data.parts = parts;
320 kirkwood_nand_data.nr_parts = nr_parts;
321 kirkwood_nand_data.chip_delay = chip_delay;
322 platform_device_register(&kirkwood_nand_flash);
325 void __init kirkwood_nand_init_rnb(struct mtd_partition *parts, int nr_parts,
326 int (*dev_ready)(struct mtd_info *))
328 kirkwood_nand_data.parts = parts;
329 kirkwood_nand_data.nr_parts = nr_parts;
330 kirkwood_nand_data.dev_ready = dev_ready;
331 platform_device_register(&kirkwood_nand_flash);
334 /*****************************************************************************
336 ****************************************************************************/
337 static void __init kirkwood_rtc_init(void)
339 orion_rtc_init(RTC_PHYS_BASE, IRQ_KIRKWOOD_RTC);
343 /*****************************************************************************
345 ****************************************************************************/
346 void __init kirkwood_sata_init(struct mv_sata_platform_data *sata_data)
348 orion_sata_init(sata_data, SATA_PHYS_BASE, IRQ_KIRKWOOD_SATA);
352 /*****************************************************************************
354 ****************************************************************************/
355 static struct resource mvsdio_resources[] = {
357 .start = SDIO_PHYS_BASE,
358 .end = SDIO_PHYS_BASE + SZ_1K - 1,
359 .flags = IORESOURCE_MEM,
362 .start = IRQ_KIRKWOOD_SDIO,
363 .end = IRQ_KIRKWOOD_SDIO,
364 .flags = IORESOURCE_IRQ,
368 static u64 mvsdio_dmamask = DMA_BIT_MASK(32);
370 static struct platform_device kirkwood_sdio = {
374 .dma_mask = &mvsdio_dmamask,
375 .coherent_dma_mask = DMA_BIT_MASK(32),
377 .num_resources = ARRAY_SIZE(mvsdio_resources),
378 .resource = mvsdio_resources,
381 void __init kirkwood_sdio_init(struct mvsdio_platform_data *mvsdio_data)
385 kirkwood_pcie_id(&dev, &rev);
386 if (rev == 0 && dev != MV88F6282_DEV_ID) /* catch all Kirkwood Z0's */
387 mvsdio_data->clock = 100000000;
389 mvsdio_data->clock = 200000000;
390 kirkwood_sdio.dev.platform_data = mvsdio_data;
391 platform_device_register(&kirkwood_sdio);
395 /*****************************************************************************
397 ****************************************************************************/
398 void __init kirkwood_spi_init()
400 orion_spi_init(SPI_PHYS_BASE);
404 /*****************************************************************************
406 ****************************************************************************/
407 void __init kirkwood_i2c_init(void)
409 orion_i2c_init(I2C_PHYS_BASE, IRQ_KIRKWOOD_TWSI, 8);
413 /*****************************************************************************
415 ****************************************************************************/
417 void __init kirkwood_uart0_init(void)
419 orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE,
420 IRQ_KIRKWOOD_UART_0, tclk);
424 /*****************************************************************************
426 ****************************************************************************/
427 void __init kirkwood_uart1_init(void)
429 orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE,
430 IRQ_KIRKWOOD_UART_1, tclk);
433 /*****************************************************************************
434 * Cryptographic Engines and Security Accelerator (CESA)
435 ****************************************************************************/
436 void __init kirkwood_crypto_init(void)
438 orion_crypto_init(CRYPTO_PHYS_BASE, KIRKWOOD_SRAM_PHYS_BASE,
439 KIRKWOOD_SRAM_SIZE, IRQ_KIRKWOOD_CRYPTO);
443 /*****************************************************************************
445 ****************************************************************************/
446 void __init kirkwood_xor0_init(void)
448 orion_xor0_init(XOR0_PHYS_BASE, XOR0_HIGH_PHYS_BASE,
449 IRQ_KIRKWOOD_XOR_00, IRQ_KIRKWOOD_XOR_01);
453 /*****************************************************************************
455 ****************************************************************************/
456 void __init kirkwood_xor1_init(void)
458 orion_xor1_init(XOR1_PHYS_BASE, XOR1_HIGH_PHYS_BASE,
459 IRQ_KIRKWOOD_XOR_10, IRQ_KIRKWOOD_XOR_11);
463 /*****************************************************************************
465 ****************************************************************************/
466 void __init kirkwood_wdt_init(void)
472 /*****************************************************************************
474 ****************************************************************************/
475 void __init kirkwood_init_early(void)
477 orion_time_set_base(TIMER_VIRT_BASE);
482 static int __init kirkwood_find_tclk(void)
486 kirkwood_pcie_id(&dev, &rev);
488 if (dev == MV88F6281_DEV_ID || dev == MV88F6282_DEV_ID)
489 if (((readl(SAMPLE_AT_RESET) >> 21) & 1) == 0)
495 static void __init kirkwood_timer_init(void)
497 kirkwood_tclk = kirkwood_find_tclk();
499 orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
500 IRQ_KIRKWOOD_BRIDGE, kirkwood_tclk);
503 struct sys_timer kirkwood_timer = {
504 .init = kirkwood_timer_init,
507 /*****************************************************************************
509 ****************************************************************************/
510 static struct resource kirkwood_i2s_resources[] = {
512 .start = AUDIO_PHYS_BASE,
513 .end = AUDIO_PHYS_BASE + SZ_16K - 1,
514 .flags = IORESOURCE_MEM,
517 .start = IRQ_KIRKWOOD_I2S,
518 .end = IRQ_KIRKWOOD_I2S,
519 .flags = IORESOURCE_IRQ,
523 static struct kirkwood_asoc_platform_data kirkwood_i2s_data = {
527 static struct platform_device kirkwood_i2s_device = {
528 .name = "kirkwood-i2s",
530 .num_resources = ARRAY_SIZE(kirkwood_i2s_resources),
531 .resource = kirkwood_i2s_resources,
533 .platform_data = &kirkwood_i2s_data,
537 static struct platform_device kirkwood_pcm_device = {
538 .name = "kirkwood-pcm-audio",
542 void __init kirkwood_audio_init(void)
544 platform_device_register(&kirkwood_i2s_device);
545 platform_device_register(&kirkwood_pcm_device);
548 /*****************************************************************************
550 ****************************************************************************/
552 * Identify device ID and revision.
554 char * __init kirkwood_id(void)
558 kirkwood_pcie_id(&dev, &rev);
560 if (dev == MV88F6281_DEV_ID) {
561 if (rev == MV88F6281_REV_Z0)
562 return "MV88F6281-Z0";
563 else if (rev == MV88F6281_REV_A0)
564 return "MV88F6281-A0";
565 else if (rev == MV88F6281_REV_A1)
566 return "MV88F6281-A1";
568 return "MV88F6281-Rev-Unsupported";
569 } else if (dev == MV88F6192_DEV_ID) {
570 if (rev == MV88F6192_REV_Z0)
571 return "MV88F6192-Z0";
572 else if (rev == MV88F6192_REV_A0)
573 return "MV88F6192-A0";
574 else if (rev == MV88F6192_REV_A1)
575 return "MV88F6192-A1";
577 return "MV88F6192-Rev-Unsupported";
578 } else if (dev == MV88F6180_DEV_ID) {
579 if (rev == MV88F6180_REV_A0)
580 return "MV88F6180-Rev-A0";
581 else if (rev == MV88F6180_REV_A1)
582 return "MV88F6180-Rev-A1";
584 return "MV88F6180-Rev-Unsupported";
585 } else if (dev == MV88F6282_DEV_ID) {
586 if (rev == MV88F6282_REV_A0)
587 return "MV88F6282-Rev-A0";
588 else if (rev == MV88F6282_REV_A1)
589 return "MV88F6282-Rev-A1";
591 return "MV88F6282-Rev-Unsupported";
593 return "Device-Unknown";
597 void __init kirkwood_l2_init(void)
599 #ifdef CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH
600 writel(readl(L2_CONFIG_REG) | L2_WRITETHROUGH, L2_CONFIG_REG);
603 writel(readl(L2_CONFIG_REG) & ~L2_WRITETHROUGH, L2_CONFIG_REG);
608 void __init kirkwood_init(void)
610 printk(KERN_INFO "Kirkwood: %s, TCLK=%d.\n",
611 kirkwood_id(), kirkwood_tclk);
614 * Disable propagation of mbus errors to the CPU local bus,
615 * as this causes mbus errors (which can occur for example
616 * for PCI aborts) to throw CPU aborts, which we're not set
619 writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG);
621 kirkwood_setup_cpu_mbus();
623 #ifdef CONFIG_CACHE_FEROCEON_L2
627 /* Setup root of clk tree */
630 /* internal devices that every board has */
633 kirkwood_xor0_init();
634 kirkwood_xor1_init();
635 kirkwood_crypto_init();
638 kexec_reinit = kirkwood_enable_pcie;
642 void kirkwood_restart(char mode, const char *cmd)
645 * Enable soft reset to assert RSTOUTn.
647 writel(SOFT_RESET_OUT_EN, RSTOUTn_MASK);
652 writel(SOFT_RESET, SYSTEM_SOFT_RESET);