Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / arch / powerpc / platforms / 85xx / mpc85xx_mds.c
blobd7e440e6dba3d3d45615e26f26894bf09bb1615c
1 /*
2 * Copyright (C) 2006-2010, 2012-2013 Freescale Semiconductor, Inc.
3 * All rights reserved.
5 * Author: Andy Fleming <afleming@freescale.com>
7 * Based on 83xx/mpc8360e_pb.c by:
8 * Li Yang <LeoLi@freescale.com>
9 * Yin Olivia <Hong-hua.Yin@freescale.com>
11 * Description:
12 * MPC85xx MDS board specific routines.
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the
16 * Free Software Foundation; either version 2 of the License, or (at your
17 * option) any later version.
20 #include <linux/stddef.h>
21 #include <linux/kernel.h>
22 #include <linux/init.h>
23 #include <linux/errno.h>
24 #include <linux/reboot.h>
25 #include <linux/pci.h>
26 #include <linux/kdev_t.h>
27 #include <linux/major.h>
28 #include <linux/console.h>
29 #include <linux/delay.h>
30 #include <linux/seq_file.h>
31 #include <linux/initrd.h>
32 #include <linux/fsl_devices.h>
33 #include <linux/of_platform.h>
34 #include <linux/of_device.h>
35 #include <linux/phy.h>
36 #include <linux/memblock.h>
37 #include <linux/fsl/guts.h>
39 #include <linux/atomic.h>
40 #include <asm/time.h>
41 #include <asm/io.h>
42 #include <asm/machdep.h>
43 #include <asm/pci-bridge.h>
44 #include <asm/irq.h>
45 #include <mm/mmu_decl.h>
46 #include <asm/prom.h>
47 #include <asm/udbg.h>
48 #include <sysdev/fsl_soc.h>
49 #include <sysdev/fsl_pci.h>
50 #include <sysdev/simple_gpio.h>
51 #include <soc/fsl/qe/qe.h>
52 #include <soc/fsl/qe/qe_ic.h>
53 #include <asm/mpic.h>
54 #include <asm/swiotlb.h>
55 #include "smp.h"
57 #include "mpc85xx.h"
59 #undef DEBUG
60 #ifdef DEBUG
61 #define DBG(fmt...) udbg_printf(fmt)
62 #else
63 #define DBG(fmt...)
64 #endif
66 #if IS_BUILTIN(CONFIG_PHYLIB)
68 #define MV88E1111_SCR 0x10
69 #define MV88E1111_SCR_125CLK 0x0010
70 static int mpc8568_fixup_125_clock(struct phy_device *phydev)
72 int scr;
73 int err;
75 /* Workaround for the 125 CLK Toggle */
76 scr = phy_read(phydev, MV88E1111_SCR);
78 if (scr < 0)
79 return scr;
81 err = phy_write(phydev, MV88E1111_SCR, scr & ~(MV88E1111_SCR_125CLK));
83 if (err)
84 return err;
86 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
88 if (err)
89 return err;
91 scr = phy_read(phydev, MV88E1111_SCR);
93 if (scr < 0)
94 return scr;
96 err = phy_write(phydev, MV88E1111_SCR, scr | 0x0008);
98 return err;
101 static int mpc8568_mds_phy_fixups(struct phy_device *phydev)
103 int temp;
104 int err;
106 /* Errata */
107 err = phy_write(phydev,29, 0x0006);
109 if (err)
110 return err;
112 temp = phy_read(phydev, 30);
114 if (temp < 0)
115 return temp;
117 temp = (temp & (~0x8000)) | 0x4000;
118 err = phy_write(phydev,30, temp);
120 if (err)
121 return err;
123 err = phy_write(phydev,29, 0x000a);
125 if (err)
126 return err;
128 temp = phy_read(phydev, 30);
130 if (temp < 0)
131 return temp;
133 temp = phy_read(phydev, 30);
135 if (temp < 0)
136 return temp;
138 temp &= ~0x0020;
140 err = phy_write(phydev,30,temp);
142 if (err)
143 return err;
145 /* Disable automatic MDI/MDIX selection */
146 temp = phy_read(phydev, 16);
148 if (temp < 0)
149 return temp;
151 temp &= ~0x0060;
152 err = phy_write(phydev,16,temp);
154 return err;
157 #endif
159 /* ************************************************************************
161 * Setup the architecture
164 #ifdef CONFIG_QUICC_ENGINE
165 static void __init mpc85xx_mds_reset_ucc_phys(void)
167 struct device_node *np;
168 static u8 __iomem *bcsr_regs;
170 /* Map BCSR area */
171 np = of_find_node_by_name(NULL, "bcsr");
172 if (!np)
173 return;
175 bcsr_regs = of_iomap(np, 0);
176 of_node_put(np);
177 if (!bcsr_regs)
178 return;
180 if (machine_is(mpc8568_mds)) {
181 #define BCSR_UCC1_GETH_EN (0x1 << 7)
182 #define BCSR_UCC2_GETH_EN (0x1 << 7)
183 #define BCSR_UCC1_MODE_MSK (0x3 << 4)
184 #define BCSR_UCC2_MODE_MSK (0x3 << 0)
186 /* Turn off UCC1 & UCC2 */
187 clrbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN);
188 clrbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN);
190 /* Mode is RGMII, all bits clear */
191 clrbits8(&bcsr_regs[11], BCSR_UCC1_MODE_MSK |
192 BCSR_UCC2_MODE_MSK);
194 /* Turn UCC1 & UCC2 on */
195 setbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN);
196 setbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN);
197 } else if (machine_is(mpc8569_mds)) {
198 #define BCSR7_UCC12_GETHnRST (0x1 << 2)
199 #define BCSR8_UEM_MARVELL_RST (0x1 << 1)
200 #define BCSR_UCC_RGMII (0x1 << 6)
201 #define BCSR_UCC_RTBI (0x1 << 5)
203 * U-Boot mangles interrupt polarity for Marvell PHYs,
204 * so reset built-in and UEM Marvell PHYs, this puts
205 * the PHYs into their normal state.
207 clrbits8(&bcsr_regs[7], BCSR7_UCC12_GETHnRST);
208 setbits8(&bcsr_regs[8], BCSR8_UEM_MARVELL_RST);
210 setbits8(&bcsr_regs[7], BCSR7_UCC12_GETHnRST);
211 clrbits8(&bcsr_regs[8], BCSR8_UEM_MARVELL_RST);
213 for_each_compatible_node(np, "network", "ucc_geth") {
214 const unsigned int *prop;
215 int ucc_num;
217 prop = of_get_property(np, "cell-index", NULL);
218 if (prop == NULL)
219 continue;
221 ucc_num = *prop - 1;
223 prop = of_get_property(np, "phy-connection-type", NULL);
224 if (prop == NULL)
225 continue;
227 if (strcmp("rtbi", (const char *)prop) == 0)
228 clrsetbits_8(&bcsr_regs[7 + ucc_num],
229 BCSR_UCC_RGMII, BCSR_UCC_RTBI);
231 } else if (machine_is(p1021_mds)) {
232 #define BCSR11_ENET_MICRST (0x1 << 5)
233 /* Reset Micrel PHY */
234 clrbits8(&bcsr_regs[11], BCSR11_ENET_MICRST);
235 setbits8(&bcsr_regs[11], BCSR11_ENET_MICRST);
238 iounmap(bcsr_regs);
241 static void __init mpc85xx_mds_qe_init(void)
243 struct device_node *np;
245 mpc85xx_qe_init();
246 mpc85xx_qe_par_io_init();
247 mpc85xx_mds_reset_ucc_phys();
249 if (machine_is(p1021_mds)) {
251 struct ccsr_guts __iomem *guts;
253 np = of_find_node_by_name(NULL, "global-utilities");
254 if (np) {
255 guts = of_iomap(np, 0);
256 if (!guts)
257 pr_err("mpc85xx-rdb: could not map global utilities register\n");
258 else{
259 /* P1021 has pins muxed for QE and other functions. To
260 * enable QE UEC mode, we need to set bit QE0 for UCC1
261 * in Eth mode, QE0 and QE3 for UCC5 in Eth mode, QE9
262 * and QE12 for QE MII management signals in PMUXCR
263 * register.
265 setbits32(&guts->pmuxcr, MPC85xx_PMUXCR_QE(0) |
266 MPC85xx_PMUXCR_QE(3) |
267 MPC85xx_PMUXCR_QE(9) |
268 MPC85xx_PMUXCR_QE(12));
269 iounmap(guts);
271 of_node_put(np);
277 static void __init mpc85xx_mds_qeic_init(void)
279 struct device_node *np;
281 np = of_find_compatible_node(NULL, NULL, "fsl,qe");
282 if (!of_device_is_available(np)) {
283 of_node_put(np);
284 return;
287 np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
288 if (!np) {
289 np = of_find_node_by_type(NULL, "qeic");
290 if (!np)
291 return;
294 if (machine_is(p1021_mds))
295 qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
296 qe_ic_cascade_high_mpic);
297 else
298 qe_ic_init(np, 0, qe_ic_cascade_muxed_mpic, NULL);
299 of_node_put(np);
301 #else
302 static void __init mpc85xx_mds_qe_init(void) { }
303 static void __init mpc85xx_mds_qeic_init(void) { }
304 #endif /* CONFIG_QUICC_ENGINE */
306 static void __init mpc85xx_mds_setup_arch(void)
308 if (ppc_md.progress)
309 ppc_md.progress("mpc85xx_mds_setup_arch()", 0);
311 mpc85xx_smp_init();
313 mpc85xx_mds_qe_init();
315 fsl_pci_assign_primary();
317 swiotlb_detect_4g();
320 #if IS_BUILTIN(CONFIG_PHYLIB)
322 static int __init board_fixups(void)
324 char phy_id[20];
325 char *compstrs[2] = {"fsl,gianfar-mdio", "fsl,ucc-mdio"};
326 struct device_node *mdio;
327 struct resource res;
328 int i;
330 for (i = 0; i < ARRAY_SIZE(compstrs); i++) {
331 mdio = of_find_compatible_node(NULL, NULL, compstrs[i]);
333 of_address_to_resource(mdio, 0, &res);
334 snprintf(phy_id, sizeof(phy_id), "%llx:%02x",
335 (unsigned long long)res.start, 1);
337 phy_register_fixup_for_id(phy_id, mpc8568_fixup_125_clock);
338 phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups);
340 /* Register a workaround for errata */
341 snprintf(phy_id, sizeof(phy_id), "%llx:%02x",
342 (unsigned long long)res.start, 7);
343 phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups);
345 of_node_put(mdio);
348 return 0;
351 machine_arch_initcall(mpc8568_mds, board_fixups);
352 machine_arch_initcall(mpc8569_mds, board_fixups);
354 #endif
356 static int __init mpc85xx_publish_devices(void)
358 if (machine_is(mpc8568_mds))
359 simple_gpiochip_init("fsl,mpc8568mds-bcsr-gpio");
360 if (machine_is(mpc8569_mds))
361 simple_gpiochip_init("fsl,mpc8569mds-bcsr-gpio");
363 return mpc85xx_common_publish_devices();
366 machine_arch_initcall(mpc8568_mds, mpc85xx_publish_devices);
367 machine_arch_initcall(mpc8569_mds, mpc85xx_publish_devices);
368 machine_arch_initcall(p1021_mds, mpc85xx_common_publish_devices);
370 machine_arch_initcall(mpc8568_mds, swiotlb_setup_bus_notifier);
371 machine_arch_initcall(mpc8569_mds, swiotlb_setup_bus_notifier);
372 machine_arch_initcall(p1021_mds, swiotlb_setup_bus_notifier);
374 static void __init mpc85xx_mds_pic_init(void)
376 struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
377 MPIC_SINGLE_DEST_CPU,
378 0, 256, " OpenPIC ");
379 BUG_ON(mpic == NULL);
381 mpic_init(mpic);
382 mpc85xx_mds_qeic_init();
385 static int __init mpc85xx_mds_probe(void)
387 return of_machine_is_compatible("MPC85xxMDS");
390 define_machine(mpc8568_mds) {
391 .name = "MPC8568 MDS",
392 .probe = mpc85xx_mds_probe,
393 .setup_arch = mpc85xx_mds_setup_arch,
394 .init_IRQ = mpc85xx_mds_pic_init,
395 .get_irq = mpic_get_irq,
396 .calibrate_decr = generic_calibrate_decr,
397 .progress = udbg_progress,
398 #ifdef CONFIG_PCI
399 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
400 .pcibios_fixup_phb = fsl_pcibios_fixup_phb,
401 #endif
404 static int __init mpc8569_mds_probe(void)
406 return of_machine_is_compatible("fsl,MPC8569EMDS");
409 define_machine(mpc8569_mds) {
410 .name = "MPC8569 MDS",
411 .probe = mpc8569_mds_probe,
412 .setup_arch = mpc85xx_mds_setup_arch,
413 .init_IRQ = mpc85xx_mds_pic_init,
414 .get_irq = mpic_get_irq,
415 .calibrate_decr = generic_calibrate_decr,
416 .progress = udbg_progress,
417 #ifdef CONFIG_PCI
418 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
419 .pcibios_fixup_phb = fsl_pcibios_fixup_phb,
420 #endif
423 static int __init p1021_mds_probe(void)
425 return of_machine_is_compatible("fsl,P1021MDS");
429 define_machine(p1021_mds) {
430 .name = "P1021 MDS",
431 .probe = p1021_mds_probe,
432 .setup_arch = mpc85xx_mds_setup_arch,
433 .init_IRQ = mpc85xx_mds_pic_init,
434 .get_irq = mpic_get_irq,
435 .calibrate_decr = generic_calibrate_decr,
436 .progress = udbg_progress,
437 #ifdef CONFIG_PCI
438 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
439 .pcibios_fixup_phb = fsl_pcibios_fixup_phb,
440 #endif