| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved. |
| * Copyright 2011 Linaro Ltd. |
| */ |
| |
| #include <linux/io.h> |
| #include <linux/of.h> |
| #include <linux/of_address.h> |
| #include <asm/mach/arch.h> |
| |
| #include "common.h" |
| #include "hardware.h" |
| |
| static void __init imx51_init_early(void) |
| { |
| mxc_set_cpu_type(MXC_CPU_MX51); |
| } |
| |
| /* |
| * The MIPI HSC unit has been removed from the i.MX51 Reference Manual by |
| * the Freescale marketing division. However this did not remove the |
| * hardware from the chip which still needs to be configured for proper |
| * IPU support. |
| */ |
| #define MX51_MIPI_HSC_BASE 0x83fdc000 |
| static void __init imx51_ipu_mipi_setup(void) |
| { |
| void __iomem *hsc_addr; |
| |
| hsc_addr = ioremap(MX51_MIPI_HSC_BASE, SZ_16K); |
| WARN_ON(!hsc_addr); |
| |
| /* setup MIPI module to legacy mode */ |
| imx_writel(0xf00, hsc_addr); |
| |
| /* CSI mode: reserved; DI control mode: legacy (from Freescale BSP) */ |
| imx_writel(imx_readl(hsc_addr + 0x800) | 0x30ff, hsc_addr + 0x800); |
| |
| iounmap(hsc_addr); |
| } |
| |
| static void __init imx51_m4if_setup(void) |
| { |
| void __iomem *m4if_base; |
| struct device_node *np; |
| |
| np = of_find_compatible_node(NULL, NULL, "fsl,imx51-m4if"); |
| if (!np) |
| return; |
| |
| m4if_base = of_iomap(np, 0); |
| of_node_put(np); |
| if (!m4if_base) { |
| pr_err("Unable to map M4IF registers\n"); |
| return; |
| } |
| |
| /* |
| * Configure VPU and IPU with higher priorities |
| * in order to avoid artifacts during video playback |
| */ |
| writel_relaxed(0x00000203, m4if_base + 0x40); |
| writel_relaxed(0x00000000, m4if_base + 0x44); |
| writel_relaxed(0x00120125, m4if_base + 0x9c); |
| writel_relaxed(0x001901A3, m4if_base + 0x48); |
| iounmap(m4if_base); |
| } |
| |
| static void __init imx51_dt_init(void) |
| { |
| imx51_ipu_mipi_setup(); |
| imx_src_init(); |
| imx51_m4if_setup(); |
| imx5_pmu_init(); |
| imx_aips_allow_unprivileged_access("fsl,imx51-aipstz"); |
| } |
| |
| static void __init imx51_init_late(void) |
| { |
| mx51_neon_fixup(); |
| imx51_pm_init(); |
| } |
| |
| static const char * const imx51_dt_board_compat[] __initconst = { |
| "fsl,imx51", |
| NULL |
| }; |
| |
| DT_MACHINE_START(IMX51_DT, "Freescale i.MX51 (Device Tree Support)") |
| .init_early = imx51_init_early, |
| .init_machine = imx51_dt_init, |
| .init_late = imx51_init_late, |
| .dt_compat = imx51_dt_board_compat, |
| MACHINE_END |
