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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-14 16:42:43 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-14 16:42:43 -0400
commit2cf4d4514d5b43c1f3b64bd0ec8b9853bde8f1dc (patch)
treee35a625496acc6ac852846d40b8851186b9d1ac4 /arch/arm/mach-kirkwood/common.c
parent44b7532b8b464f606053562400719c9c21276037 (diff)
parentce53895a5d24e0ee19fb92f56c17323fb4c9ab27 (diff)
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (417 commits) MAINTAINERS: EB110ATX is not ebsa110 MAINTAINERS: update Eric Miao's email address and status fb: add support of LCD display controller on pxa168/910 (base layer) [ARM] 5552/1: ep93xx get_uart_rate(): use EP93XX_SYSCON_PWRCNT and EP93XX_SYSCON_PWRCN [ARM] pxa/sharpsl_pm: zaurus needs generic pxa suspend/resume routines [ARM] 5544/1: Trust PrimeCell resource sizes [ARM] pxa/sharpsl_pm: cleanup of gpio-related code. [ARM] pxa/sharpsl_pm: drop set_irq_type calls [ARM] pxa/sharpsl_pm: merge pxa-specific code into generic one [ARM] pxa/sharpsl_pm: merge the two sharpsl_pm.c since it's now pxa specific [ARM] sa1100: remove unused collie_pm.c [ARM] pxa: fix the conflicting non-static declarations of global_gpios[] [ARM] 5550/1: Add default configure file for w90p910 platform [ARM] 5549/1: Add clock api for w90p910 platform. [ARM] 5548/1: Add gpio api for w90p910 platform [ARM] 5551/1: Add multi-function pin api for w90p910 platform. [ARM] Make ARM_VIC_NR depend on ARM_VIC [ARM] 5546/1: ARM PL022 SSP/SPI driver v3 ARM: OMAP4: SMP: Update defconfig for OMAP4430 ARM: OMAP4: SMP: Enable SMP support for OMAP4430 ...
Diffstat (limited to 'arch/arm/mach-kirkwood/common.c')
-rw-r--r--arch/arm/mach-kirkwood/common.c159
1 files changed, 159 insertions, 0 deletions
diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
index be1ca28fed3f..0f6919838011 100644
--- a/arch/arm/mach-kirkwood/common.c
+++ b/arch/arm/mach-kirkwood/common.c
@@ -16,6 +16,7 @@
16#include <linux/mv643xx_eth.h> 16#include <linux/mv643xx_eth.h>
17#include <linux/mv643xx_i2c.h> 17#include <linux/mv643xx_i2c.h>
18#include <linux/ata_platform.h> 18#include <linux/ata_platform.h>
19#include <linux/mtd/nand.h>
19#include <linux/spi/orion_spi.h> 20#include <linux/spi/orion_spi.h>
20#include <net/dsa.h> 21#include <net/dsa.h>
21#include <asm/page.h> 22#include <asm/page.h>
@@ -29,6 +30,7 @@
29#include <plat/mvsdio.h> 30#include <plat/mvsdio.h>
30#include <plat/mv_xor.h> 31#include <plat/mv_xor.h>
31#include <plat/orion_nand.h> 32#include <plat/orion_nand.h>
33#include <plat/orion_wdt.h>
32#include <plat/time.h> 34#include <plat/time.h>
33#include "common.h" 35#include "common.h"
34 36
@@ -54,6 +56,13 @@ void __init kirkwood_map_io(void)
54 iotable_init(kirkwood_io_desc, ARRAY_SIZE(kirkwood_io_desc)); 56 iotable_init(kirkwood_io_desc, ARRAY_SIZE(kirkwood_io_desc));
55} 57}
56 58
59/*
60 * Default clock control bits. Any bit _not_ set in this variable
61 * will be cleared from the hardware after platform devices have been
62 * registered. Some reserved bits must be set to 1.
63 */
64unsigned int kirkwood_clk_ctrl = CGC_DUNIT | CGC_RESERVED;
65
57 66
58/***************************************************************************** 67/*****************************************************************************
59 * EHCI 68 * EHCI
@@ -95,6 +104,7 @@ static struct platform_device kirkwood_ehci = {
95 104
96void __init kirkwood_ehci_init(void) 105void __init kirkwood_ehci_init(void)
97{ 106{
107 kirkwood_clk_ctrl |= CGC_USB0;
98 platform_device_register(&kirkwood_ehci); 108 platform_device_register(&kirkwood_ehci);
99} 109}
100 110
@@ -151,6 +161,7 @@ static struct platform_device kirkwood_ge00 = {
151 161
152void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data) 162void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data)
153{ 163{
164 kirkwood_clk_ctrl |= CGC_GE0;
154 eth_data->shared = &kirkwood_ge00_shared; 165 eth_data->shared = &kirkwood_ge00_shared;
155 kirkwood_ge00.dev.platform_data = eth_data; 166 kirkwood_ge00.dev.platform_data = eth_data;
156 167
@@ -212,6 +223,7 @@ static struct platform_device kirkwood_ge01 = {
212 223
213void __init kirkwood_ge01_init(struct mv643xx_eth_platform_data *eth_data) 224void __init kirkwood_ge01_init(struct mv643xx_eth_platform_data *eth_data)
214{ 225{
226 kirkwood_clk_ctrl |= CGC_GE1;
215 eth_data->shared = &kirkwood_ge01_shared; 227 eth_data->shared = &kirkwood_ge01_shared;
216 kirkwood_ge01.dev.platform_data = eth_data; 228 kirkwood_ge01.dev.platform_data = eth_data;
217 229
@@ -258,6 +270,43 @@ void __init kirkwood_ge00_switch_init(struct dsa_platform_data *d, int irq)
258 270
259 271
260/***************************************************************************** 272/*****************************************************************************
273 * NAND flash
274 ****************************************************************************/
275static struct resource kirkwood_nand_resource = {
276 .flags = IORESOURCE_MEM,
277 .start = KIRKWOOD_NAND_MEM_PHYS_BASE,
278 .end = KIRKWOOD_NAND_MEM_PHYS_BASE +
279 KIRKWOOD_NAND_MEM_SIZE - 1,
280};
281
282static struct orion_nand_data kirkwood_nand_data = {
283 .cle = 0,
284 .ale = 1,
285 .width = 8,
286};
287
288static struct platform_device kirkwood_nand_flash = {
289 .name = "orion_nand",
290 .id = -1,
291 .dev = {
292 .platform_data = &kirkwood_nand_data,
293 },
294 .resource = &kirkwood_nand_resource,
295 .num_resources = 1,
296};
297
298void __init kirkwood_nand_init(struct mtd_partition *parts, int nr_parts,
299 int chip_delay)
300{
301 kirkwood_clk_ctrl |= CGC_RUNIT;
302 kirkwood_nand_data.parts = parts;
303 kirkwood_nand_data.nr_parts = nr_parts;
304 kirkwood_nand_data.chip_delay = chip_delay;
305 platform_device_register(&kirkwood_nand_flash);
306}
307
308
309/*****************************************************************************
261 * SoC RTC 310 * SoC RTC
262 ****************************************************************************/ 311 ****************************************************************************/
263static struct resource kirkwood_rtc_resource = { 312static struct resource kirkwood_rtc_resource = {
@@ -301,6 +350,9 @@ static struct platform_device kirkwood_sata = {
301 350
302void __init kirkwood_sata_init(struct mv_sata_platform_data *sata_data) 351void __init kirkwood_sata_init(struct mv_sata_platform_data *sata_data)
303{ 352{
353 kirkwood_clk_ctrl |= CGC_SATA0;
354 if (sata_data->n_ports > 1)
355 kirkwood_clk_ctrl |= CGC_SATA1;
304 sata_data->dram = &kirkwood_mbus_dram_info; 356 sata_data->dram = &kirkwood_mbus_dram_info;
305 kirkwood_sata.dev.platform_data = sata_data; 357 kirkwood_sata.dev.platform_data = sata_data;
306 platform_device_register(&kirkwood_sata); 358 platform_device_register(&kirkwood_sata);
@@ -346,6 +398,7 @@ void __init kirkwood_sdio_init(struct mvsdio_platform_data *mvsdio_data)
346 else 398 else
347 mvsdio_data->clock = 200000000; 399 mvsdio_data->clock = 200000000;
348 mvsdio_data->dram = &kirkwood_mbus_dram_info; 400 mvsdio_data->dram = &kirkwood_mbus_dram_info;
401 kirkwood_clk_ctrl |= CGC_SDIO;
349 kirkwood_sdio.dev.platform_data = mvsdio_data; 402 kirkwood_sdio.dev.platform_data = mvsdio_data;
350 platform_device_register(&kirkwood_sdio); 403 platform_device_register(&kirkwood_sdio);
351} 404}
@@ -377,6 +430,7 @@ static struct platform_device kirkwood_spi = {
377 430
378void __init kirkwood_spi_init() 431void __init kirkwood_spi_init()
379{ 432{
433 kirkwood_clk_ctrl |= CGC_RUNIT;
380 platform_device_register(&kirkwood_spi); 434 platform_device_register(&kirkwood_spi);
381} 435}
382 436
@@ -507,6 +561,43 @@ void __init kirkwood_uart1_init(void)
507 561
508 562
509/***************************************************************************** 563/*****************************************************************************
564 * Cryptographic Engines and Security Accelerator (CESA)
565 ****************************************************************************/
566
567static struct resource kirkwood_crypto_res[] = {
568 {
569 .name = "regs",
570 .start = CRYPTO_PHYS_BASE,
571 .end = CRYPTO_PHYS_BASE + 0xffff,
572 .flags = IORESOURCE_MEM,
573 }, {
574 .name = "sram",
575 .start = KIRKWOOD_SRAM_PHYS_BASE,
576 .end = KIRKWOOD_SRAM_PHYS_BASE + KIRKWOOD_SRAM_SIZE - 1,
577 .flags = IORESOURCE_MEM,
578 }, {
579 .name = "crypto interrupt",
580 .start = IRQ_KIRKWOOD_CRYPTO,
581 .end = IRQ_KIRKWOOD_CRYPTO,
582 .flags = IORESOURCE_IRQ,
583 },
584};
585
586static struct platform_device kirkwood_crypto_device = {
587 .name = "mv_crypto",
588 .id = -1,
589 .num_resources = ARRAY_SIZE(kirkwood_crypto_res),
590 .resource = kirkwood_crypto_res,
591};
592
593void __init kirkwood_crypto_init(void)
594{
595 kirkwood_clk_ctrl |= CGC_CRYPTO;
596 platform_device_register(&kirkwood_crypto_device);
597}
598
599
600/*****************************************************************************
510 * XOR 601 * XOR
511 ****************************************************************************/ 602 ****************************************************************************/
512static struct mv_xor_platform_shared_data kirkwood_xor_shared_data = { 603static struct mv_xor_platform_shared_data kirkwood_xor_shared_data = {
@@ -597,6 +688,7 @@ static struct platform_device kirkwood_xor01_channel = {
597 688
598static void __init kirkwood_xor0_init(void) 689static void __init kirkwood_xor0_init(void)
599{ 690{
691 kirkwood_clk_ctrl |= CGC_XOR0;
600 platform_device_register(&kirkwood_xor0_shared); 692 platform_device_register(&kirkwood_xor0_shared);
601 693
602 /* 694 /*
@@ -695,6 +787,7 @@ static struct platform_device kirkwood_xor11_channel = {
695 787
696static void __init kirkwood_xor1_init(void) 788static void __init kirkwood_xor1_init(void)
697{ 789{
790 kirkwood_clk_ctrl |= CGC_XOR1;
698 platform_device_register(&kirkwood_xor1_shared); 791 platform_device_register(&kirkwood_xor1_shared);
699 792
700 /* 793 /*
@@ -713,6 +806,29 @@ static void __init kirkwood_xor1_init(void)
713 806
714 807
715/***************************************************************************** 808/*****************************************************************************
809 * Watchdog
810 ****************************************************************************/
811static struct orion_wdt_platform_data kirkwood_wdt_data = {
812 .tclk = 0,
813};
814
815static struct platform_device kirkwood_wdt_device = {
816 .name = "orion_wdt",
817 .id = -1,
818 .dev = {
819 .platform_data = &kirkwood_wdt_data,
820 },
821 .num_resources = 0,
822};
823
824static void __init kirkwood_wdt_init(void)
825{
826 kirkwood_wdt_data.tclk = kirkwood_tclk;
827 platform_device_register(&kirkwood_wdt_device);
828}
829
830
831/*****************************************************************************
716 * Time handling 832 * Time handling
717 ****************************************************************************/ 833 ****************************************************************************/
718int kirkwood_tclk; 834int kirkwood_tclk;
@@ -804,6 +920,49 @@ void __init kirkwood_init(void)
804 920
805 /* internal devices that every board has */ 921 /* internal devices that every board has */
806 kirkwood_rtc_init(); 922 kirkwood_rtc_init();
923 kirkwood_wdt_init();
807 kirkwood_xor0_init(); 924 kirkwood_xor0_init();
808 kirkwood_xor1_init(); 925 kirkwood_xor1_init();
926 kirkwood_crypto_init();
927}
928
929static int __init kirkwood_clock_gate(void)
930{
931 unsigned int curr = readl(CLOCK_GATING_CTRL);
932
933 printk(KERN_DEBUG "Gating clock of unused units\n");
934 printk(KERN_DEBUG "before: 0x%08x\n", curr);
935
936 /* Make sure those units are accessible */
937 writel(curr | CGC_SATA0 | CGC_SATA1 | CGC_PEX0, CLOCK_GATING_CTRL);
938
939 /* For SATA: first shutdown the phy */
940 if (!(kirkwood_clk_ctrl & CGC_SATA0)) {
941 /* Disable PLL and IVREF */
942 writel(readl(SATA0_PHY_MODE_2) & ~0xf, SATA0_PHY_MODE_2);
943 /* Disable PHY */
944 writel(readl(SATA0_IF_CTRL) | 0x200, SATA0_IF_CTRL);
945 }
946 if (!(kirkwood_clk_ctrl & CGC_SATA1)) {
947 /* Disable PLL and IVREF */
948 writel(readl(SATA1_PHY_MODE_2) & ~0xf, SATA1_PHY_MODE_2);
949 /* Disable PHY */
950 writel(readl(SATA1_IF_CTRL) | 0x200, SATA1_IF_CTRL);
951 }
952
953 /* For PCIe: first shutdown the phy */
954 if (!(kirkwood_clk_ctrl & CGC_PEX0)) {
955 writel(readl(PCIE_LINK_CTRL) | 0x10, PCIE_LINK_CTRL);
956 while (1)
957 if (readl(PCIE_STATUS) & 0x1)
958 break;
959 writel(readl(PCIE_LINK_CTRL) & ~0x10, PCIE_LINK_CTRL);
960 }
961
962 /* Now gate clock the required units */
963 writel(kirkwood_clk_ctrl, CLOCK_GATING_CTRL);
964 printk(KERN_DEBUG " after: 0x%08x\n", readl(CLOCK_GATING_CTRL));
965
966 return 0;
809} 967}
968late_initcall(kirkwood_clock_gate);