soc/mediatek: Create a function to check ulposc
We will use the same drivers for checking ulposc in MT8188, so we add a new function pmif_ulposc_check() to common. TEST=build pass BUG=b:233720142 Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com> Change-Id: I40136eaeb2c08a97cd65bfb8a81f2f24739d4d51 Reviewed-on: https://review.coreboot.org/c/coreboot/+/65841 Reviewed-by: Yu-Ping Wu <yupingso@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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@@ -3,6 +3,7 @@
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#ifndef __MEDIATEK_SOC_PMIF_CLK_COMMON__
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#define __MEDIATEK_SOC_PMIF_CLK_COMMON__
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int pmif_ulposc_check(u32 current_clk, u32 target_clk);
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int pmif_ulposc_cali(u32 target_val);
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#endif /*__MEDIATEK_SOC_PMIF_CLK_COMMON__*/
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@@ -5,6 +5,23 @@
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#include <soc/pmif_clk_common.h>
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#include <soc/pmif_sw.h>
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int pmif_ulposc_check(u32 current_clk, u32 target_clk)
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{
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if (current_clk < (target_clk * (1000 - CAL_TOL_RATE) / 1000) ||
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current_clk > (target_clk * (1000 + CAL_TOL_RATE) / 1000)) {
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printk(BIOS_WARNING,
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"[%s] calibration fail: cur=%d, CAL_RATE=%d, target=%dM\n",
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__func__, current_clk, CAL_TOL_RATE, target_clk);
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return -1;
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}
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printk(BIOS_DEBUG,
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"[%s] calibration done: cur=%d, CAL_RATE=%d, target=%dM\n",
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__func__, current_clk, CAL_TOL_RATE, target_clk);
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return 0;
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}
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int pmif_ulposc_cali(u32 target_val)
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{
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u32 current_val, min = 0, max = CAL_MAX_VAL, middle;
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@@ -32,12 +49,5 @@ int pmif_ulposc_cali(u32 target_val)
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current_val = pmif_get_ulposc_freq_mhz(cal_result);
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/* check if calibrated value is in the range of target value +- 15% */
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if (current_val < (target_val * (1000 - CAL_TOL_RATE) / 1000) ||
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current_val > (target_val * (1000 + CAL_TOL_RATE) / 1000)) {
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printk(BIOS_ERR, "[%s] calibration fail: cur=%d, CAL_RATE=%d, target=%dM\n",
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__func__, current_val, CAL_TOL_RATE, target_val);
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return 1;
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}
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return 0;
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return pmif_ulposc_check(current_val, target_val);
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}
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