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ram: rockchip: Add debug sdram driver

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Add sdram driver to handle debug across rockchip SoCs.

This would help to improve code debugging feature for
sdram drivers in rockchip family, whoever wants to
debug the driver should call these core debug code on
their respective platform sdram drivers.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: YouMin Chen <cym@rock-chips.com>
Reviewed-by: Kever Yang <Kever.yang@rock-chips.com>
This commit is contained in:
Jagan Teki 2019-07-15 23:58:48 +05:30 committed by Kever Yang
parent 3940ab6523
commit 07112672a5
4 changed files with 53 additions and 0 deletions
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9
arch/arm/include/asm/arch-rockchip/sdram_common.h
View File

@ -92,4 +92,13 @@ size_t rockchip_sdram_size(phys_addr_t reg);
/* Called by U-Boot board_init_r for Rockchip SoCs */
int dram_init(void);
#if !defined(CONFIG_RAM_ROCKCHIP_DEBUG)
inline void sdram_print_dram_type(unsigned char dramtype)
{
}
#else
void sdram_print_dram_type(unsigned char dramtype);
#endif /* CONFIG_RAM_ROCKCHIP_DEBUG */
#endif

9
drivers/ram/rockchip/Kconfig
View File

@ -7,6 +7,15 @@ config RAM_ROCKCHIP
if RAM_ROCKCHIP
config RAM_ROCKCHIP_DEBUG
bool "Rockchip ram drivers debugging"
help
This enables debugging ram driver API's for the platforms
based on Rockchip SoCs.
This is an option for developers to understand the ram drivers
initialization, configurations and etc.
config RAM_RK3399
bool "Ram driver for Rockchip RK3399"
default ROCKCHIP_RK3399

1
drivers/ram/rockchip/Makefile
View File

@ -3,6 +3,7 @@
# Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
#
obj-$(CONFIG_RAM_ROCKCHIP_DEBUG) += sdram_debug.o
obj-$(CONFIG_ROCKCHIP_RK3368) = dmc-rk3368.o
obj-$(CONFIG_ROCKCHIP_RK3128) = sdram_rk3128.o
obj-$(CONFIG_ROCKCHIP_RK3188) = sdram_rk3188.o

34
drivers/ram/rockchip/sdram_debug.c Normal file
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@ -0,0 +1,34 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* (C) Copyright 2019 Rockchip Electronics Co., Ltd
* (C) Copyright 2019 Amarula Solutions.
* Author: Jagan Teki <jagan@amarulasolutions.com>
*/
#include <common.h>
#include <debug_uart.h>
#include <asm/arch-rockchip/sdram_common.h>
void sdram_print_dram_type(unsigned char dramtype)
{
switch (dramtype) {
case DDR3:
printascii("DDR3");
break;
case DDR4:
printascii("DDR4");
break;
case LPDDR2:
printascii("LPDDR2");
break;
case LPDDR3:
printascii("LPDDR3");
break;
case LPDDR4:
printascii("LPDDR4");
break;
default:
printascii("Unknown Device");
break;
}
}