diff options
| author | Jagan Teki <jagan@amarulasolutions.com> | 2020-07-21 12:16:37 +0530 |
|---|---|---|
| committer | Kever Yang <kever.yang@rock-chips.com> | 2020-07-22 20:55:13 +0800 |
| commit | c60d1c4e17ee14910e1f11192b34e33984de972d (patch) | |
| tree | 46f79a6f16034471f47357f4a52c33b202d10a63 /arch | |
| parent | 1f1395405fc633afe93fae4d923a84452412734b (diff) | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/arch-rockchip/cpu_rk3288.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-rockchip/cpu_rk3288.h b/arch/arm/include/asm/arch-rockchip/cpu_rk3288.h new file mode 100644 index 0000000000..7445e64b8c --- /dev/null +++ b/arch/arm/include/asm/arch-rockchip/cpu_rk3288.h @@ -0,0 +1,49 @@ +/* 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 */ |