ish: Trim down the release branchstabilize-wristpin-14469.59.B-ishstabilize-voshyr-14637.B-ishstabilize-quickfix-14695.187.B-ishstabilize-quickfix-14695.124.B-ishstabilize-quickfix-14526.91.B-ishstabilize-14695.85.B-ishstabilize-14695.107.B-ishstabilize-14682.B-ishstabilize-14633.B-ishstabilize-14616.B-ishstabilize-14589.B-ishstabilize-14588.98.B-ishstabilize-14588.14.B-ishstabilize-14588.123.B-ishstabilize-14536.B-ishstabilize-14532.B-ishstabilize-14528.B-ishstabilize-14526.89.B-ishstabilize-14526.84.B-ishstabilize-14526.73.B-ishstabilize-14526.67.B-ishstabilize-14526.57.B-ishstabilize-14498.B-ishstabilize-14496.B-ishstabilize-14477.B-ishstabilize-14469.9.B-ishstabilize-14469.8.B-ishstabilize-14469.58.B-ishstabilize-14469.41.B-ishstabilize-14442.B-ishstabilize-14438.B-ishstabilize-14411.B-ishstabilize-14396.B-ishstabilize-14395.B-ishstabilize-14388.62.B-ishstabilize-14388.61.B-ishstabilize-14388.52.B-ishstabilize-14385.B-ishstabilize-14345.B-ishstabilize-14336.B-ishstabilize-14333.B-ishrelease-R99-14469.B-ishrelease-R98-14388.B-ishrelease-R102-14695.B-ishrelease-R101-14588.B-ishrelease-R100-14526.B-ishfirmware-cherry-14454.B-ishfirmware-brya-14505.B-ishfirmware-brya-14505.71.B-ishfactory-kukui-14374.B-ishfactory-guybrush-14600.B-ishfactory-cherry-14455.B-ishfactory-brya-14517.B-ish

In the interest of making long-term branch maintenance incur as little
technical debt on us as possible, we should not maintain any files on
the branch we are not actually using.

This has the added effect of making it extremely clear when merging CLs
from the main branch when changes have the possibility to affect us.

The follow-on CL adds a convenience script to actually pull updates from
the main branch and generate a CL for the update.

BUG=b:204206272
BRANCH=ish
TEST=make BOARD=arcada_ish && make BOARD=drallion_ish

Signed-off-by: Jack Rosenthal <jrosenth@chromium.org>
Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038
Reviewed-by: Jett Rink <jettrink@chromium.org>
Reviewed-by: Tom Hughes <tomhughes@chromium.org>

1 files changed, 0 insertions, 441 deletions

diff --git a/chip/mt_scp/mt8195/clock.c b/chip/mt_scp/mt8195/clock.c
deleted file mode 100644
index c6bf3cbc79..0000000000
--- a/chip/mt_scp/mt8195/clock.c
+++ /dev/null
@@ -1,441 +0,0 @@
-/* Copyright 2021 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-/* Clocks, PLL and power settings */
-
-#include <assert.h>
-#include <string.h>
-
-#include "clock.h"
-#include "common.h"
-#include "console.h"
-#include "csr.h"
-#include "ec_commands.h"
-#include "power.h"
-#include "registers.h"
-#include "timer.h"
-
-#define CPRINTF(format, args...) cprintf(CC_CLOCK, format, ##args)
-#define CPRINTS(format, args...) cprints(CC_CLOCK, format, ##args)
-
-enum scp_clock_source {
-	SCP_CLK_SYSTEM,
-	SCP_CLK_32K,
-	SCP_CLK_ULPOSC1,
-	SCP_CLK_ULPOSC2_LOW_SPEED,
-	SCP_CLK_ULPOSC2_HIGH_SPEED,
-};
-
-enum {
-	OPP_ULPOSC2_LOW_SPEED,
-	OPP_ULPOSC2_HIGH_SPEED,
-};
-
-static struct opp_ulposc_cfg {
-	uint32_t osc;
-	uint32_t div;
-	uint32_t fband;
-	uint32_t mod;
-	uint32_t cali;
-	uint32_t target_mhz;
-	uint32_t clk_div;
-} opp[] = {
-	[OPP_ULPOSC2_LOW_SPEED] = {
-		.osc = 1, .target_mhz = 326, .clk_div = CLK_DIV_SEL2, .div = 19,
-		.fband = 10, .mod = 0, .cali = 64, /* 326MHz / 2 = 163MHz */
-	},
-	[OPP_ULPOSC2_HIGH_SPEED] = {
-		.osc = 1, .target_mhz = 360, .clk_div = CLK_DIV_SEL1, .div = 21,
-		.fband = 10, .mod = 0, .cali = 64, /* 360MHz / 1 = 360MHz */
-	},
-};
-
-static inline void clock_busy_udelay(int usec)
-{
-	/*
-	 * Delaying by busy-looping, for place that can't use udelay because of
-	 * the clock not configured yet. The value 28 is chosen approximately
-	 * from experiment.
-	 *
-	 * `volatile' in order to avoid compiler to optimize the function out
-	 * (otherwise, the function will be eliminated).
-	 */
-	volatile int i = usec * 28;
-
-	while (--i)
-		;
-}
-
-static void clock_ulposc_config_default(struct opp_ulposc_cfg *opp)
-{
-	uint32_t val = 0;
-
-	/* set mod, div2_en = 0, cp_en = 0 */
-	val |= opp->mod << OSC_MOD_SHIFT;
-	/* set div */
-	val |= opp->div << OSC_DIV_SHIFT;
-	/* set F-band, I-band = 82 */
-	val |= (opp->fband << OSC_FBAND_SHIFT) | (82 << OSC_IBAND_SHIFT);
-	/* set calibration */
-	val |= opp->cali;
-	/* set control register 0 */
-	AP_ULPOSC_CON0(opp->osc) = val;
-
-	clock_busy_udelay(50);
-
-	/* bias = 65 */
-	val = 65 << OSC_BIAS_SHIFT;
-	/* rsv2 = 0, rsv1 = 41, cali_32k = 0 */
-	val |= 41 << OSC_RSV1_SHIFT;
-	/* set control register 1 */
-	AP_ULPOSC_CON1(opp->osc) = val;
-
-	/* set settle time */
-	SCP_CLK_HIGH_VAL =
-		(SCP_CLK_HIGH_VAL & ~CLK_HIGH_VAL_MASK) | CLK_HIGH_VAL_VAL(2);
-}
-
-static void clock_ulposc_config_cali(struct opp_ulposc_cfg *opp,
-				     uint32_t cali_val)
-{
-	uint32_t val;
-
-	val = AP_ULPOSC_CON0(opp->osc);
-	val &= ~OSC_CALI_MASK;
-	val |= cali_val;
-	AP_ULPOSC_CON0(opp->osc) = val;
-	opp->cali = cali_val;
-
-	clock_busy_udelay(50);
-}
-
-static uint32_t clock_ulposc_measure_freq(uint32_t osc)
-{
-	uint32_t result = 0;
-	int cnt;
-	uint32_t cali_0 = AP_CLK26CALI_0;
-	uint32_t cali_1 = AP_CLK26CALI_1;
-	uint32_t dbg_cfg = AP_CLK_DBG_CFG;
-	uint32_t misc_cfg = AP_CLK_MISC_CFG_0;
-
-	/* Set ckgen_load_cnt: CLK26CALI_1[25:16] */
-	AP_CLK26CALI_1 = CFG_CKGEN_LOAD_CNT;
-
-	/* before select meter clock input, bit[1:0] = b00 */
-	AP_CLK_DBG_CFG = (AP_CLK_DBG_CFG & ~DBG_MODE_MASK) |
-			 DBG_MODE_SET_CLOCK;
-
-	/* select monclk_ext2fqmtr_sel: AP_CLK_DBG_CFG[14:8] */
-	AP_CLK_DBG_CFG = (AP_CLK_DBG_CFG & ~DBG_BIST_SOURCE_MASK) |
-			 (osc == 0 ? DBG_BIST_SOURCE_ULPOSC1 :
-				     DBG_BIST_SOURCE_ULPOSC2);
-
-	/* set meter divisor to 1, bit[31:24] = b00000000 */
-	AP_CLK_MISC_CFG_0 = (AP_CLK_MISC_CFG_0 & ~MISC_METER_DIVISOR_MASK) |
-			    MISC_METER_DIV_1;
-
-	/* enable frequency meter, without start */
-	AP_CLK26CALI_0 |= CFG_FREQ_METER_ENABLE;
-
-	/* trigger frequency meter start */
-	AP_CLK26CALI_0 |= CFG_FREQ_METER_RUN;
-
-	clock_busy_udelay(45);
-
-	for (cnt = 10000; cnt > 0; --cnt) {
-		clock_busy_udelay(10);
-		if (!(AP_CLK26CALI_0 & CFG_FREQ_METER_RUN)) {
-			result = CFG_FREQ_COUNTER(AP_CLK26CALI_1);
-			break;
-		}
-	}
-
-	AP_CLK26CALI_0 = cali_0;
-	AP_CLK26CALI_1 = cali_1;
-	AP_CLK_DBG_CFG = dbg_cfg;
-	AP_CLK_MISC_CFG_0 = misc_cfg;
-
-	/* disable freq meter */
-	AP_CLK26CALI_0 &= ~CFG_FREQ_METER_ENABLE;
-
-	return result;
-}
-
-#define CAL_MIS_RATE	40
-static int clock_ulposc_is_calibrated(struct opp_ulposc_cfg *opp)
-{
-	uint32_t curr, target;
-
-	curr = clock_ulposc_measure_freq(opp->osc);
-	target = opp->target_mhz * 512 / 26;
-
-#ifdef DEBUG
-	CPRINTF("osc:%u, target=%uMHz, curr=%uMHz, cali:%u\n",
-		opp->osc, opp->target_mhz, (curr * 26) / 512, opp->cali);
-#endif
-
-	/* check if calibrated value is in the range of target value +- 4% */
-	if (curr > (target * (1000 - CAL_MIS_RATE) / 1000) &&
-	    curr < (target * (1000 + CAL_MIS_RATE) / 1000))
-		return 1;
-	else
-		return 0;
-}
-
-static uint32_t clock_ulposc_process_cali(struct opp_ulposc_cfg *opp)
-{
-	uint32_t current_val = 0;
-	uint32_t target_val = opp->target_mhz * 512 / 26;
-	uint32_t middle, min = 0, max = OSC_CALI_MASK;
-	uint32_t diff_by_min, diff_by_max, cal_result;
-
-	do {
-		middle = (min + max) / 2;
-		if (middle == min)
-			break;
-
-		clock_ulposc_config_cali(opp, middle);
-		current_val = clock_ulposc_measure_freq(opp->osc);
-
-		if (current_val > target_val)
-			max = middle;
-		else
-			min = middle;
-	} while (min <= max);
-
-	clock_ulposc_config_cali(opp, min);
-	current_val = clock_ulposc_measure_freq(opp->osc);
-	if (current_val > target_val)
-		diff_by_min = current_val - target_val;
-	else
-		diff_by_min = target_val - current_val;
-
-	clock_ulposc_config_cali(opp, max);
-	current_val = clock_ulposc_measure_freq(opp->osc);
-	if (current_val > target_val)
-		diff_by_max = current_val - target_val;
-	else
-		diff_by_max = target_val - current_val;
-
-	if (diff_by_min < diff_by_max)
-		cal_result = min;
-	else
-		cal_result = max;
-
-	clock_ulposc_config_cali(opp, cal_result);
-	if (!clock_ulposc_is_calibrated(opp))
-		assert(0);
-
-	return cal_result;
-}
-
-static void clock_high_enable(int osc)
-{
-	/* enable high speed clock */
-	SCP_CLK_ENABLE |= CLK_HIGH_EN;
-
-	switch (osc) {
-	case 0:
-		/* after 150us, enable ULPOSC */
-		clock_busy_udelay(150);
-		SCP_CLK_ENABLE |= CLK_HIGH_CG | CLK_HIGH_EN;
-
-		/* topck ulposc1 clk gating off */
-		AP_CLK_CFG_29_CLR = PDN_F_ULPOSC_CK;
-		/* select topck ulposc1 as scp clk parent */
-		AP_CLK_CFG_29_CLR = ULPOSC1_CLK_SEL;
-
-		AP_CLK_CFG_UPDATE3 = F_ULPOSC_CK_UPDATE;
-		clock_busy_udelay(50);
-		break;
-	case 1:
-		/* turn off ULPOSC2 high-core-disable switch */
-		SCP_CLK_ON_CTRL &= ~HIGH_CORE_DIS_SUB;
-		/* after 150us, scp requests ULPOSC2 high core clock */
-		clock_busy_udelay(150);
-		SCP_CLK_HIGH_CORE_CG |= HIGH_CORE_CG;
-		SCP_CLK_ENABLE &= ~CLK_HIGH_CG;
-		clock_busy_udelay(50);
-
-		/* topck ulposc2 clk gating off */
-		AP_CLK_CFG_29_CLR = PDN_F_ULPOSC_CORE_CK;
-		/* select topck ulposc2 as scp clk parent */
-		AP_CLK_CFG_29_CLR = ULPOSC2_CLK_SEL;
-
-		AP_CLK_CFG_UPDATE3 = F_ULPOSC_CORE_CK_UPDATE;
-		clock_busy_udelay(50);
-		break;
-	default:
-		break;
-	}
-}
-
-static void clock_high_disable(int osc)
-{
-	switch (osc) {
-	case 0:
-		/* topck ulposc1 clk gating on */
-		AP_CLK_CFG_29_SET = PDN_F_ULPOSC_CK;
-		AP_CLK_CFG_UPDATE3 = F_ULPOSC_CK_UPDATE;
-		clock_busy_udelay(50);
-
-		/* scp doesn't request ulposc1 clk */
-		SCP_CLK_ENABLE &= ~CLK_HIGH_CG;
-		clock_busy_udelay(50);
-		SCP_CLK_ENABLE &= ~CLK_HIGH_EN;
-		clock_busy_udelay(50);
-		break;
-	case 1:
-		/* topck ulposc2 clk gating on */
-		AP_CLK_CFG_29_SET = PDN_F_ULPOSC_CORE_CK;
-		AP_CLK_CFG_UPDATE3 = F_ULPOSC_CORE_CK_UPDATE;
-		clock_busy_udelay(50);
-
-		/* scp doesn't request ulposc2 clk */
-		SCP_CLK_HIGH_CORE_CG &= ~HIGH_CORE_CG;
-		clock_busy_udelay(50);
-		SCP_CLK_ON_CTRL |= HIGH_CORE_DIS_SUB;
-		clock_busy_udelay(50);
-		break;
-	default:
-		break;
-	}
-}
-
-static void clock_calibrate_ulposc(struct opp_ulposc_cfg *opp)
-{
-	/*
-	 * ULPOSC1(osc=0) is already
-	 * - calibrated
-	 * - enabled in coreboot
-	 * - used by pmic wrapper
-	 */
-	if (opp->osc != 0) {
-		clock_high_disable(opp->osc);
-		clock_ulposc_config_default(opp);
-		clock_high_enable(opp->osc);
-	}
-
-	/* Calibrate only if it is not accurate enough. */
-	if (!clock_ulposc_is_calibrated(opp))
-		opp->cali = clock_ulposc_process_cali(opp);
-}
-
-static void clock_select_clock(enum scp_clock_source src)
-{
-	uint32_t sel;
-	uint32_t div;
-
-	switch (src) {
-	case SCP_CLK_SYSTEM:
-		div = CLK_DIV_SEL1;
-		sel = CLK_SW_SEL_SYSTEM;
-		break;
-	case SCP_CLK_32K:
-		div = CLK_DIV_SEL1;
-		sel = CLK_SW_SEL_32K;
-		break;
-	case SCP_CLK_ULPOSC1:
-		div = CLK_DIV_SEL1;
-		sel = CLK_SW_SEL_ULPOSC1;
-		break;
-	case SCP_CLK_ULPOSC2_LOW_SPEED:
-		/* parking at scp system clk until ulposc clk is ready */
-		clock_select_clock(SCP_CLK_SYSTEM);
-
-		clock_ulposc_config_cali(&opp[OPP_ULPOSC2_LOW_SPEED],
-					 opp[OPP_ULPOSC2_LOW_SPEED].cali);
-		div = opp[OPP_ULPOSC2_LOW_SPEED].clk_div;
-
-		sel = CLK_SW_SEL_ULPOSC2;
-		break;
-	case SCP_CLK_ULPOSC2_HIGH_SPEED:
-		/* parking at scp system clk until ulposc clk is ready */
-		clock_select_clock(SCP_CLK_SYSTEM);
-
-		clock_ulposc_config_cali(&opp[OPP_ULPOSC2_HIGH_SPEED],
-					 opp[OPP_ULPOSC2_HIGH_SPEED].cali);
-		div = opp[OPP_ULPOSC2_HIGH_SPEED].clk_div;
-
-		sel = CLK_SW_SEL_ULPOSC2;
-		break;
-	default:
-		div = CLK_DIV_SEL1;
-		sel = CLK_SW_SEL_SYSTEM;
-		break;
-	}
-
-	SCP_CLK_DIV_SEL = div;
-	SCP_CLK_SW_SEL = sel;
-}
-
-__override void
-power_chipset_handle_host_sleep_event(enum host_sleep_event state,
-				      struct host_sleep_event_context *ctx)
-{
-	if (state == HOST_SLEEP_EVENT_S3_SUSPEND) {
-		CPRINTS("AP suspend");
-		clock_select_clock(SCP_CLK_32K);
-	} else if (state == HOST_SLEEP_EVENT_S3_RESUME) {
-		CPRINTS("AP resume");
-		clock_select_clock(SCP_CLK_ULPOSC2_HIGH_SPEED);
-	}
-}
-
-void clock_init(void)
-{
-	uint32_t i;
-
-	/* select scp system clock (default 26MHz) */
-	clock_select_clock(SCP_CLK_SYSTEM);
-
-	/* set VREQ to HW mode */
-	SCP_CPU_VREQ_CTRL = VREQ_SEL | VREQ_DVFS_SEL;
-	SCP_CLK_CTRL_GENERAL_CTRL &= ~VREQ_PMIC_WRAP_SEL;
-	SCP_SEC_CTRL &= ~VREQ_SECURE_DIS;
-
-	/* set DDREN to auto mode */
-	SCP_SYS_CTRL |= AUTO_DDREN;
-
-	/* set settle time */
-	SCP_CLK_SYS_VAL =
-		(SCP_CLK_SYS_VAL & ~CLK_SYS_VAL_MASK) | CLK_SYS_VAL_VAL(1);
-	SCP_CLK_HIGH_VAL =
-		(SCP_CLK_HIGH_VAL & ~CLK_HIGH_VAL_MASK) | CLK_HIGH_VAL_VAL(1);
-	SCP_SLEEP_CTRL =
-		(SCP_SLEEP_CTRL & ~VREQ_COUNT_MASK) | VREQ_COUNT_VAL(1);
-
-	/* turn off ULPOSC2 */
-	SCP_CLK_ON_CTRL |= HIGH_CORE_DIS_SUB;
-
-	/* calibrate ULPOSC2 */
-	for (i = 0; i < ARRAY_SIZE(opp); ++i)
-		clock_calibrate_ulposc(&opp[i]);
-
-	/* select ULPOSC2 high speed SCP clock */
-	clock_select_clock(SCP_CLK_ULPOSC2_HIGH_SPEED);
-
-	/* select BCLK to use ULPOSC / 8 */
-	SCP_BCLK_CK_SEL = BCLK_CK_SEL_ULPOSC_DIV8;
-
-	/* enable default clock gate */
-	SCP_SET_CLK_CG |= CG_DMA_CH3 | CG_DMA_CH2 | CG_DMA_CH1 | CG_DMA_CH0 |
-			  CG_I2C_MCLK | CG_MAD_MCLK | CG_AP2P_MCLK;
-}
-
-#ifdef DEBUG
-int command_ulposc(int argc, char *argv[])
-{
-	uint32_t osc;
-
-	for (osc = 0; osc <= OPP_ULPOSC2_HIGH_SPEED; ++osc)
-		ccprintf("ULPOSC%u frequency: %u kHz\n", osc + 1,
-			 clock_ulposc_measure_freq(osc) * 26 * 1000 / 512);
-
-	return EC_SUCCESS;
-}
-DECLARE_CONSOLE_COMMAND(ulposc, command_ulposc, "[ulposc]",
-			"Measure ULPOSC frequency");
-#endif