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rockchip: Add rk3288 SoC detection helper
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>
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arch/arm/include/asm/arch-rockchip/cpu_rk3288.h
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arch/arm/include/asm/arch-rockchip/cpu_rk3288.h
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Rockchip Electronics Co., Ltd.
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*/
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#ifndef __ASM_ARCH_CPU_RK3288_H
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#define __ASM_ARCH_CPU_RK3288_H
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#include <asm/io.h>
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#define ROCKCHIP_CPU_MASK 0xffff0000
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#define ROCKCHIP_CPU_RK3288 0x32880000
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#define ROCKCHIP_SOC_MASK (ROCKCHIP_CPU_MASK | 0xff)
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#define ROCKCHIP_SOC_RK3288 (ROCKCHIP_CPU_RK3288 | 0x00)
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#define ROCKCHIP_SOC_RK3288W (ROCKCHIP_CPU_RK3288 | 0x01)
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#define RK3288_HDMI_PHYS 0xff980000
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#define HDMI_CONFIG0_ID 0x4
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#define RK3288W_HDMI_REVID 0x1a
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static inline int rockchip_soc_id(void)
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{
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u8 reg;
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#if defined(CONFIG_ROCKCHIP_RK3288)
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reg = readb(RK3288_HDMI_PHYS + HDMI_CONFIG0_ID);
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if (reg == RK3288W_HDMI_REVID)
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return ROCKCHIP_SOC_RK3288W;
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else
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return ROCKCHIP_SOC_RK3288;
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#else
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return 0;
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#endif
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}
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#define ROCKCHIP_SOC(id, ID) \
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static inline bool soc_is_##id(void) \
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{ \
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int soc_id = rockchip_soc_id(); \
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if (soc_id) \
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return ((soc_id & ROCKCHIP_SOC_MASK) == ROCKCHIP_SOC_ ##ID); \
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return false; \
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}
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ROCKCHIP_SOC(rk3288, RK3288)
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ROCKCHIP_SOC(rk3288w, RK3288W)
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#endif /* __ASM_ARCH_CPU_RK3288_H */
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