From e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb Mon Sep 17 00:00:00 2001 From: Yang Zhang Date: Fri, 28 Aug 2015 09:58:54 +0800 Subject: Add qemu 2.4.0 Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang --- qemu/roms/u-boot/arch/arm/cpu/armv7/u8500/clock.c | 74 +++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 qemu/roms/u-boot/arch/arm/cpu/armv7/u8500/clock.c (limited to 'qemu/roms/u-boot/arch/arm/cpu/armv7/u8500/clock.c') diff --git a/qemu/roms/u-boot/arch/arm/cpu/armv7/u8500/clock.c b/qemu/roms/u-boot/arch/arm/cpu/armv7/u8500/clock.c new file mode 100644 index 000000000..1e3b3d520 --- /dev/null +++ b/qemu/roms/u-boot/arch/arm/cpu/armv7/u8500/clock.c @@ -0,0 +1,74 @@ +/* + * (C) Copyright 2009 ST-Ericsson + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +struct clkrst { + unsigned int pcken; + unsigned int pckdis; + unsigned int kcken; + unsigned int kckdis; +}; + +static unsigned int clkrst_base[] = { + U8500_CLKRST1_BASE, + U8500_CLKRST2_BASE, + U8500_CLKRST3_BASE, + 0, + U8500_CLKRST5_BASE, + U8500_CLKRST6_BASE, + U8500_CLKRST7_BASE, /* ED only */ +}; + +/* Turn on peripheral clock at PRCC level */ +void u8500_clock_enable(int periph, int cluster, int kern) +{ + struct clkrst *clkrst = (struct clkrst *) clkrst_base[periph - 1]; + + if (kern != -1) + writel(1 << kern, &clkrst->kcken); + + if (cluster != -1) + writel(1 << cluster, &clkrst->pcken); +} + +void db8500_clocks_init(void) +{ + /* + * Enable all clocks. This is u-boot, we can enable it all. There is no + * powersave in u-boot. + */ + + u8500_clock_enable(1, 9, -1); /* GPIO0 */ + u8500_clock_enable(2, 11, -1);/* GPIO1 */ + u8500_clock_enable(3, 8, -1); /* GPIO2 */ + u8500_clock_enable(5, 1, -1); /* GPIO3 */ + u8500_clock_enable(3, 6, 6); /* UART2 */ + u8500_clock_enable(3, 3, 3); /* I2C0 */ + u8500_clock_enable(1, 5, 5); /* SDI0 */ + u8500_clock_enable(2, 4, 2); /* SDI4 */ + u8500_clock_enable(6, 6, -1); /* MTU0 */ + u8500_clock_enable(3, 4, 4); /* SDI2 */ + + /* + * Enabling clocks for all devices which are AMBA devices in the + * kernel. Otherwise they will not get probe()'d because the + * peripheral ID register will not be powered. + */ + + /* XXX: some of these differ between ED/V1 */ + + u8500_clock_enable(1, 1, 1); /* UART1 */ + u8500_clock_enable(1, 0, 0); /* UART0 */ + u8500_clock_enable(3, 2, 2); /* SSP1 */ + u8500_clock_enable(3, 1, 1); /* SSP0 */ + u8500_clock_enable(2, 8, -1); /* SPI0 */ + u8500_clock_enable(2, 5, 3); /* MSP2 */ +} -- cgit 1.2.3-korg