mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 06:12:58 +00:00
8ae1f82988
In raspberrypi-firmware 7fdcd00e00a42a1c91e8bd6f5eb8352fe9358557 and later start.elf now sets the EMMC clock to 200 MHz. According to Phil Elwell in https://github.com/raspberrypi/firmware/issues/953 the SDHost controller shares the core/VPU clock and doesn't use the EMMC clock. Use the core clock id when determining the frequency to allow U-Boot to work with recent versions of raspberrypi-firmware. Otherwise U-Boot hangs at: U-Boot 2018.03 (Mar 14 2018 - 20:36:00 +1100) DRAM: 948 MiB RPI 3 Model B (0xa02082) MMC: mmc@7e202000: 0, sdhci@7e300000: 1 Loading Environment from FAT... Signed-off-by: Jonathan Gray <jsg@jsg.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*
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* (C) Copyright 2012,2015 Stephen Warren
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _BCM2835_MSG_H
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#define _BCM2835_MSG_H
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/**
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* bcm2835_power_on_module() - power on an SoC module
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*
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* @module: ID of module to power on (BCM2835_MBOX_POWER_DEVID_...)
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* @return 0 if OK, -EIO on error
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*/
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int bcm2835_power_on_module(u32 module);
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/**
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* bcm2835_get_mmc_clock() - get the frequency of the MMC clock
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*
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* @clock_id: ID of clock to get frequency for
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* @return clock frequency, or -ve on error
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*/
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int bcm2835_get_mmc_clock(u32 clock_id);
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/**
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* bcm2835_get_video_size() - get the current display size
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*
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* @widthp: Returns the width in pixels
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* @heightp: Returns the height in pixels
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* @return 0 if OK, -ve on error
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*/
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int bcm2835_get_video_size(int *widthp, int *heightp);
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/**
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* bcm2835_set_video_params() - set the video parameters
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*
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* @widthp: Video width to request (returns the actual width selected)
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* @heightp: Video height to request (returns the actual height selected)
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* @depth_bpp: Requested bit depth
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* @pixel_order: Pixel order to use (BCM2835_MBOX_PIXEL_ORDER_...)
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* @alpha_mode: Alpha transparency mode to use (BCM2835_MBOX_ALPHA_MODE_...)
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* @fb_basep: Returns base address of frame buffer
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* @fb_sizep: Returns size of frame buffer
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* @pitchp: Returns number of bytes in each frame buffer line
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* @return 0 if OK, -ve on error
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*/
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int bcm2835_set_video_params(int *widthp, int *heightp, int depth_bpp,
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int pixel_order, int alpha_mode, ulong *fb_basep,
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ulong *fb_sizep, int *pitchp);
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#endif
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