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| author | Christoph Muellner <christoph.muellner@theobroma-systems.com> | 2018-11-30 20:32:48 +0100 |
|---|---|---|
| committer | Philipp Tomsich <philipp.tomsich@theobroma-systems.com> | 2018-11-30 21:56:45 +0100 |
| commit | af765a49baac1191da1cf272a19d650d313c3314 (patch) | |
| tree | e9f8241998bd7f78943a64867ff6b6e59ffc0bd5 /arch | |
| parent | a73610d2c6dbfbc7383ae9d694b1412f57a3f398 (diff) | |
| download | u-boot-af765a49baac1191da1cf272a19d650d313c3314.tar.gz u-boot-af765a49baac1191da1cf272a19d650d313c3314.tar.xz u-boot-af765a49baac1191da1cf272a19d650d313c3314.zip | |
rockchip: rk3399: Initialize CPU B clock.
This patch sets the PLL of CPU cluster B (BPLL) to 600 MHz.
This decreases the boot time of Linux 4.19 by about 8%.
The 600 MHz are inspired by the 600 MHz used for LPLL initialization
(came in with commit 9f636a249c1).
Tested on RK3399-Q7 on Haikou base board.
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/arch-rockchip/cru_rk3399.h | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/arch/arm/include/asm/arch-rockchip/cru_rk3399.h b/arch/arm/include/asm/arch-rockchip/cru_rk3399.h index b18de9f7c2..15eeb9c440 100644 --- a/arch/arm/include/asm/arch-rockchip/cru_rk3399.h +++ b/arch/arm/include/asm/arch-rockchip/cru_rk3399.h @@ -69,16 +69,21 @@ check_member(rk3399_cru, sdio1_con[1], 0x594); #define MHz 1000000 #define KHz 1000 #define OSC_HZ (24*MHz) -#define APLL_HZ (600*MHz) +#define LPLL_HZ (600*MHz) +#define BPLL_HZ (600*MHz) #define GPLL_HZ (594*MHz) #define CPLL_HZ (384*MHz) #define PPLL_HZ (676*MHz) #define PMU_PCLK_HZ (48*MHz) -#define ACLKM_CORE_HZ (300*MHz) -#define ATCLK_CORE_HZ (300*MHz) -#define PCLK_DBG_HZ (100*MHz) +#define ACLKM_CORE_L_HZ (300*MHz) +#define ATCLK_CORE_L_HZ (300*MHz) +#define PCLK_DBG_L_HZ (100*MHz) + +#define ACLKM_CORE_B_HZ (300*MHz) +#define ATCLK_CORE_B_HZ (300*MHz) +#define PCLK_DBG_B_HZ (100*MHz) #define PERIHP_ACLK_HZ (148500*KHz) #define PERIHP_HCLK_HZ (148500*KHz) @@ -98,4 +103,13 @@ enum apll_l_frequencies { APLL_L_600_MHZ, }; +enum apll_b_frequencies { + APLL_B_600_MHZ, +}; + +void rk3399_configure_cpu_l(struct rk3399_cru *cru, + enum apll_l_frequencies apll_l_freq); +void rk3399_configure_cpu_b(struct rk3399_cru *cru, + enum apll_b_frequencies apll_b_freq); + #endif /* __ASM_ARCH_CRU_RK3399_H_ */ |