Actually add the mpc85xx_get_platform_clock() function.
Follow up r319935 by actually committing the mpc85xx_get_platform_clock() function. This function was created to facilitate other development, and I thought I had committed it earlier. Some blocks depend on the platform clock rather than the system clock. The System clock is derived from the platform clock as one-half the platform clock. Rewrite mpc85xx_get_system_clock() to use the new function. Pointy-hat to: jhibbits
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=319936
@ -438,16 +438,28 @@ mpc85xx_fix_errata(vm_offset_t va_ccsr)
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}
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uint32_t
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mpc85xx_get_system_clock(void)
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mpc85xx_get_platform_clock(void)
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{
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phandle_t soc;
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uint32_t freq;
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static uint32_t freq;
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if (freq != 0)
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return (freq);
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soc = OF_finddevice("/soc");
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freq = 0;
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/* freq isn't modified on error. */
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OF_getencprop(soc, "bus-frequency", (void *)&freq, sizeof(freq));
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return (freq);
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}
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uint32_t
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mpc85xx_get_system_clock(void)
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{
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uint32_t freq;
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freq = mpc85xx_get_platform_clock();
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return (freq / 2);
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}
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@ -171,6 +171,7 @@ void mpc85xx_enable_l3_cache(void);
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void mpc85xx_fix_errata(vm_offset_t);
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void dataloss_erratum_access(vm_offset_t, uint32_t);
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int mpc85xx_is_qoriq(void);
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uint32_t mpc85xx_get_platform_clock(void);
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uint32_t mpc85xx_get_system_clock(void);
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#endif /* _MPC85XX_H_ */
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