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rockchip: Add rk3288 SoC detection helper

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Rockchip SoC's has a new revision chip for rk3288 SoCs.

RK3288 has a new revision chip called RK3288W which is similar
but different hclk_vio clock and fixed OHCI host.

Add common Rockchip SoC detection helper to support this rk3288w
detection.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Jagan Teki 2020-07-21 12:16:37 +05:30 • committed by Kever Yang
parent 1f1395405f
commit c60d1c4e17
1 changed files with 49 additions and 0 deletions
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49
arch/arm/include/asm/arch-rockchip/cpu_rk3288.h Normal file
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Rockchip Electronics Co., Ltd.
*/
#ifndef __ASM_ARCH_CPU_RK3288_H
#define __ASM_ARCH_CPU_RK3288_H
#include <asm/io.h>
#define ROCKCHIP_CPU_MASK 0xffff0000
#define ROCKCHIP_CPU_RK3288 0x32880000
#define ROCKCHIP_SOC_MASK (ROCKCHIP_CPU_MASK | 0xff)
#define ROCKCHIP_SOC_RK3288 (ROCKCHIP_CPU_RK3288 | 0x00)
#define ROCKCHIP_SOC_RK3288W (ROCKCHIP_CPU_RK3288 | 0x01)
#define RK3288_HDMI_PHYS 0xff980000
#define HDMI_CONFIG0_ID 0x4
#define RK3288W_HDMI_REVID 0x1a
static inline int rockchip_soc_id(void)
{
u8 reg;
#if defined(CONFIG_ROCKCHIP_RK3288)
reg = readb(RK3288_HDMI_PHYS + HDMI_CONFIG0_ID);
if (reg == RK3288W_HDMI_REVID)
return ROCKCHIP_SOC_RK3288W;
else
return ROCKCHIP_SOC_RK3288;
#else
return 0;
#endif
}
#define ROCKCHIP_SOC(id, ID) \
static inline bool soc_is_##id(void) \
{ \
int soc_id = rockchip_soc_id(); \
if (soc_id) \
return ((soc_id & ROCKCHIP_SOC_MASK) == ROCKCHIP_SOC_ ##ID); \
return false; \
}
ROCKCHIP_SOC(rk3288, RK3288)
ROCKCHIP_SOC(rk3288w, RK3288W)
#endif /* __ASM_ARCH_CPU_RK3288_H */