[U-Boot] [PATCH] powerpc/85xx: Fixup determining PME, FMan freq
On CoreNet based SoCs (P2040, P3041, P4080, P5020) we have some additional rules to determining the various frequencies that PME & FMan IP blocks run at.
We need to take into account: * Reduced number of Core Complex PLL clusters * HWA_ASYNC_DIV (allows for /2 or /4 options)
On P2040/P3041/P5020 we only have 2 Core Complex PLLs and in such SoCs the PME & FMan blocks utilize the second Core Complex PLL. On SoCs like p4080 with 4 Core Complex PLLs we utilize the third Core Complex PLL for PME & FMan blocks.
On P2040/P3041/P5020 we have the added feature that we can divide the PLL down further by either /2 or /4 based on HWA_ASYNC_DIV. On P4080 this options doesn't exist, however HWA_ASYNC_DIV field in RCW should be set to 0 and this gets a backward compatiable /2 behavior.
Signed-off-by: Kumar Gala galak@kernel.crashing.org --- arch/powerpc/cpu/mpc85xx/speed.c | 38 ++++++++++++++++++++++------- arch/powerpc/include/asm/config_mpc85xx.h | 6 ++++ 2 files changed, 35 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c index e762269..2caff4b 100644 --- a/arch/powerpc/cpu/mpc85xx/speed.c +++ b/arch/powerpc/cpu/mpc85xx/speed.c @@ -108,25 +108,45 @@ void get_sys_info (sys_info_t * sysInfo) #define PME_CLK_SEL 0x80000000 #define FM1_CLK_SEL 0x40000000 #define FM2_CLK_SEL 0x20000000 +#define HWA_ASYNC_DIV 0x04000000 +#if (CONFIG_SYS_FSL_NUM_CC_PLLS == 2) +#define HWA_CC_PLL 1 +#elif (CONFIG_SYS_FSL_NUM_CC_PLLS == 4) +#define HWA_CC_PLL 2 +#else +#error CONFIG_SYS_FSL_NUM_CC_PLLS not set or unknown case +#endif rcw_tmp = in_be32(&gur->rcwsr[7]);
#ifdef CONFIG_SYS_DPAA_PME - if (rcw_tmp & PME_CLK_SEL) - sysInfo->freqPME = freqCC_PLL[2] / 2; - else + if (rcw_tmp & PME_CLK_SEL) { + if (rcw_tmp & HWA_ASYNC_DIV) + sysInfo->freqPME = freqCC_PLL[HWA_CC_PLL] / 4; + else + sysInfo->freqPME = freqCC_PLL[HWA_CC_PLL] / 2; + } else { sysInfo->freqPME = sysInfo->freqSystemBus / 2; + } #endif
#ifdef CONFIG_SYS_DPAA_FMAN - if (rcw_tmp & FM1_CLK_SEL) - sysInfo->freqFMan[0] = freqCC_PLL[2] / 2; - else + if (rcw_tmp & FM1_CLK_SEL) { + if (rcw_tmp & HWA_ASYNC_DIV) + sysInfo->freqFMan[0] = freqCC_PLL[HWA_CC_PLL] / 4; + else + sysInfo->freqFMan[0] = freqCC_PLL[HWA_CC_PLL] / 2; + } else { sysInfo->freqFMan[0] = sysInfo->freqSystemBus / 2; + } #if (CONFIG_SYS_NUM_FMAN) == 2 - if (rcw_tmp & FM2_CLK_SEL) - sysInfo->freqFMan[1] = freqCC_PLL[2] / 2; - else + if (rcw_tmp & FM2_CLK_SEL) { + if (rcw_tmp & HWA_ASYNC_DIV) + sysInfo->freqFMan[1] = freqCC_PLL[HWA_CC_PLL] / 4; + else + sysInfo->freqFMan[1] = freqCC_PLL[HWA_CC_PLL] / 2; + } else { sysInfo->freqFMan[1] = sysInfo->freqSystemBus / 2; + } #endif #endif
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h index 1f4dee4..41fd86c 100644 --- a/arch/powerpc/include/asm/config_mpc85xx.h +++ b/arch/powerpc/include/asm/config_mpc85xx.h @@ -257,6 +257,7 @@
#elif defined(CONFIG_PPC_P2040) #define CONFIG_MAX_CPUS 4 +#define CONFIG_SYS_FSL_NUM_CC_PLLS 2 #define CONFIG_SYS_FSL_NUM_LAWS 32 #define CONFIG_SYS_FSL_SEC_COMPAT 4 #define CONFIG_SYS_NUM_FMAN 1 @@ -266,6 +267,7 @@
#elif defined(CONFIG_PPC_P3041) #define CONFIG_MAX_CPUS 4 +#define CONFIG_SYS_FSL_NUM_CC_PLLS 2 #define CONFIG_SYS_FSL_NUM_LAWS 32 #define CONFIG_SYS_FSL_SEC_COMPAT 4 #define CONFIG_SYS_NUM_FMAN 1 @@ -276,12 +278,14 @@
#elif defined(CONFIG_PPC_P4040) #define CONFIG_MAX_CPUS 4 +#define CONFIG_SYS_FSL_NUM_CC_PLLS 4 #define CONFIG_SYS_FSL_NUM_LAWS 32 #define CONFIG_SYS_FSL_SEC_COMPAT 4 #define CONFIG_SYS_FM_MURAM_SIZE 0x28000
#elif defined(CONFIG_PPC_P4080) #define CONFIG_MAX_CPUS 8 +#define CONFIG_SYS_FSL_NUM_CC_PLLS 4 #define CONFIG_SYS_FSL_NUM_LAWS 32 #define CONFIG_SYS_FSL_SEC_COMPAT 4 #define CONFIG_SYS_NUM_FMAN 2 @@ -304,6 +308,7 @@ /* P5010 is single core version of P5020 */ #elif defined(CONFIG_PPC_P5010) #define CONFIG_MAX_CPUS 1 +#define CONFIG_SYS_FSL_NUM_CC_PLLS 2 #define CONFIG_SYS_FSL_NUM_LAWS 32 #define CONFIG_SYS_FSL_SEC_COMPAT 4 #define CONFIG_SYS_NUM_FMAN 1 @@ -314,6 +319,7 @@
#elif defined(CONFIG_PPC_P5020) #define CONFIG_MAX_CPUS 2 +#define CONFIG_SYS_FSL_NUM_CC_PLLS 2 #define CONFIG_SYS_FSL_NUM_LAWS 32 #define CONFIG_SYS_FSL_SEC_COMPAT 4 #define CONFIG_SYS_NUM_FMAN 1
On Mar 6, 2011, at 10:47 PM, Kumar Gala wrote:
On CoreNet based SoCs (P2040, P3041, P4080, P5020) we have some additional rules to determining the various frequencies that PME & FMan IP blocks run at.
We need to take into account:
- Reduced number of Core Complex PLL clusters
- HWA_ASYNC_DIV (allows for /2 or /4 options)
On P2040/P3041/P5020 we only have 2 Core Complex PLLs and in such SoCs the PME & FMan blocks utilize the second Core Complex PLL. On SoCs like p4080 with 4 Core Complex PLLs we utilize the third Core Complex PLL for PME & FMan blocks.
On P2040/P3041/P5020 we have the added feature that we can divide the PLL down further by either /2 or /4 based on HWA_ASYNC_DIV. On P4080 this options doesn't exist, however HWA_ASYNC_DIV field in RCW should be set to 0 and this gets a backward compatiable /2 behavior.
Signed-off-by: Kumar Gala galak@kernel.crashing.org
arch/powerpc/cpu/mpc85xx/speed.c | 38 ++++++++++++++++++++++------- arch/powerpc/include/asm/config_mpc85xx.h | 6 ++++ 2 files changed, 35 insertions(+), 9 deletions(-)
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Kumar Gala