diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.9/0030-Main-bcm2708-bcm2709-linux-port.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.9/0030-Main-bcm2708-bcm2709-linux-port.patch | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.9/0030-Main-bcm2708-bcm2709-linux-port.patch b/target/linux/brcm2708/patches-4.9/0030-Main-bcm2708-bcm2709-linux-port.patch new file mode 100644 index 0000000000..81d48b7984 --- /dev/null +++ b/target/linux/brcm2708/patches-4.9/0030-Main-bcm2708-bcm2709-linux-port.patch @@ -0,0 +1,199 @@ +From 28a1aeb6b49ffdf5cb5ba9e326df962c270c1f34 Mon Sep 17 00:00:00 2001 +From: popcornmix <popcornmix@gmail.com> +Date: Sun, 12 May 2013 12:24:19 +0100 +Subject: [PATCH] Main bcm2708/bcm2709 linux port +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Signed-off-by: popcornmix <popcornmix@gmail.com> +Signed-off-by: Noralf Trønnes <noralf@tronnes.org> + +bcm2709: Drop platform smp and timer init code + +irq-bcm2836 handles this through these functions: +bcm2835_init_local_timer_frequency() +bcm2836_arm_irqchip_smp_init() + +Signed-off-by: Noralf Trønnes <noralf@tronnes.org> + +bcm270x: Use watchdog for reboot/poweroff + +The watchdog driver already has support for reboot/poweroff. +Make use of this and remove the code from the platform files. + +Signed-off-by: Noralf Trønnes <noralf@tronnes.org> +--- + arch/arm/mach-bcm/Kconfig | 1 + + arch/arm/mach-bcm/board_bcm2835.c | 17 +++++++++++++++++ + arch/arm/mm/proc-v6.S | 15 ++++++++++++--- + drivers/irqchip/irq-bcm2835.c | 7 ++++++- + drivers/mailbox/bcm2835-mailbox.c | 18 ++++++++++++++++-- + 5 files changed, 52 insertions(+), 6 deletions(-) + +--- a/arch/arm/mach-bcm/Kconfig ++++ b/arch/arm/mach-bcm/Kconfig +@@ -155,6 +155,7 @@ config ARCH_BCM2835 + select FIQ + select PINCTRL + select PINCTRL_BCM2835 ++ select MFD_SYSCON if ARCH_MULTI_V7 + help + This enables support for the Broadcom BCM2835 and BCM2836 SoCs. + This SoC is used in the Raspberry Pi and Roku 2 devices. +--- a/arch/arm/mach-bcm/board_bcm2835.c ++++ b/arch/arm/mach-bcm/board_bcm2835.c +@@ -16,17 +16,21 @@ + #include <linux/irqchip.h> + #include <linux/of_address.h> + #include <linux/clk/bcm2835.h> ++#include <linux/broadcom/vc_cma.h> + #include <asm/system_info.h> + + #include <asm/mach/arch.h> + #include <asm/mach/map.h> + ++#include <linux/dma-mapping.h> ++ + static void __init bcm2835_init(void) + { + struct device_node *np = of_find_node_by_path("/system"); + u32 val; + u64 val64; + ++ vc_cma_early_init(); + bcm2835_init_clocks(); + + if (!of_property_read_u32(np, "linux,revision", &val)) +@@ -35,6 +39,17 @@ static void __init bcm2835_init(void) + system_serial_low = val64; + } + ++static void __init bcm2835_init_early(void) ++{ ++ /* dwc_otg needs this for bounce buffers on non-aligned transfers */ ++ init_dma_coherent_pool_size(SZ_1M); ++} ++ ++static void __init bcm2835_board_reserve(void) ++{ ++ vc_cma_reserve(); ++} ++ + static const char * const bcm2835_compat[] = { + #ifdef CONFIG_ARCH_MULTI_V6 + "brcm,bcm2835", +@@ -47,5 +62,7 @@ static const char * const bcm2835_compat + + DT_MACHINE_START(BCM2835, "BCM2835") + .init_machine = bcm2835_init, ++ .reserve = bcm2835_board_reserve, ++ .init_early = bcm2835_init_early, + .dt_compat = bcm2835_compat + MACHINE_END +--- a/arch/arm/mm/proc-v6.S ++++ b/arch/arm/mm/proc-v6.S +@@ -73,10 +73,19 @@ ENDPROC(cpu_v6_reset) + * + * IRQs are already disabled. + */ ++ ++/* See jira SW-5991 for details of this workaround */ + ENTRY(cpu_v6_do_idle) +- mov r1, #0 +- mcr p15, 0, r1, c7, c10, 4 @ DWB - WFI may enter a low-power mode +- mcr p15, 0, r1, c7, c0, 4 @ wait for interrupt ++ .align 5 ++ mov r1, #2 ++1: subs r1, #1 ++ nop ++ mcreq p15, 0, r1, c7, c10, 4 @ DWB - WFI may enter a low-power mode ++ mcreq p15, 0, r1, c7, c0, 4 @ wait for interrupt ++ nop ++ nop ++ nop ++ bne 1b + ret lr + + ENTRY(cpu_v6_dcache_clean_area) +--- a/drivers/irqchip/irq-bcm2835.c ++++ b/drivers/irqchip/irq-bcm2835.c +@@ -54,7 +54,9 @@ + #include <linux/regmap.h> + + #include <asm/exception.h> ++#ifndef CONFIG_ARM64 + #include <asm/mach/irq.h> ++#endif + + /* Put the bank and irq (32 bits) into the hwirq */ + #define MAKE_HWIRQ(b, n) (((b) << 5) | (n)) +@@ -82,6 +84,7 @@ + #define NR_BANKS 3 + #define IRQS_PER_BANK 32 + #define NUMBER_IRQS MAKE_HWIRQ(NR_BANKS, 0) ++#undef FIQ_START + #define FIQ_START (NR_IRQS_BANK0 + MAKE_HWIRQ(NR_BANKS - 1, 0)) + + static const int reg_pending[] __initconst = { 0x00, 0x04, 0x08 }; +@@ -256,10 +259,12 @@ static int __init armctrl_of_init(struct + MAKE_HWIRQ(b, i) + NUMBER_IRQS); + BUG_ON(irq <= 0); + irq_set_chip(irq, &armctrl_chip); +- set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); ++ irq_set_probe(irq); + } + } ++#ifndef CONFIG_ARM64 + init_FIQ(FIQ_START); ++#endif + + return 0; + } +--- a/drivers/mailbox/bcm2835-mailbox.c ++++ b/drivers/mailbox/bcm2835-mailbox.c +@@ -51,12 +51,15 @@ + #define MAIL1_WRT (ARM_0_MAIL1 + 0x00) + #define MAIL1_STA (ARM_0_MAIL1 + 0x18) + ++/* On ARCH_BCM270x these come through <linux/interrupt.h> (arm_control.h ) */ ++#ifndef ARM_MS_FULL + /* Status register: FIFO state. */ + #define ARM_MS_FULL BIT(31) + #define ARM_MS_EMPTY BIT(30) + + /* Configuration register: Enable interrupts. */ + #define ARM_MC_IHAVEDATAIRQEN BIT(0) ++#endif + + struct bcm2835_mbox { + void __iomem *regs; +@@ -151,7 +154,7 @@ static int bcm2835_mbox_probe(struct pla + return -ENOMEM; + spin_lock_init(&mbox->lock); + +- ret = devm_request_irq(dev, irq_of_parse_and_map(dev->of_node, 0), ++ ret = devm_request_irq(dev, platform_get_irq(pdev, 0), + bcm2835_mbox_irq, 0, dev_name(dev), mbox); + if (ret) { + dev_err(dev, "Failed to register a mailbox IRQ handler: %d\n", +@@ -209,7 +212,18 @@ static struct platform_driver bcm2835_mb + .probe = bcm2835_mbox_probe, + .remove = bcm2835_mbox_remove, + }; +-module_platform_driver(bcm2835_mbox_driver); ++ ++static int __init bcm2835_mbox_init(void) ++{ ++ return platform_driver_register(&bcm2835_mbox_driver); ++} ++arch_initcall(bcm2835_mbox_init); ++ ++static void __init bcm2835_mbox_exit(void) ++{ ++ platform_driver_unregister(&bcm2835_mbox_driver); ++} ++module_exit(bcm2835_mbox_exit); + + MODULE_AUTHOR("Lubomir Rintel <lkundrak@v3.sk>"); + MODULE_DESCRIPTION("BCM2835 mailbox IPC driver"); |