From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id ABF20C433EF for ; Mon, 9 May 2022 03:16:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231681AbiEIDRt (ORCPT ); Sun, 8 May 2022 23:17:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35274 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232257AbiEIDOP (ORCPT ); Sun, 8 May 2022 23:14:15 -0400 Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 94DB38E18B; Sun, 8 May 2022 20:10:19 -0700 (PDT) Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 2493A75b083668; Sun, 8 May 2022 22:10:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1652065807; bh=lbMzZ6Jl2+yMFL2ybAkxfceLgPzC/M89KeNBnVFzkG0=; h=Date:Subject:To:CC:References:From:In-Reply-To; b=uhQ4hHorKf2NAVJPhvpXFohRdQno2xMQVAEuAt3aa7Rzxntt4FULzWpl6s+voLhky fOQsPgaoQQ+w3z4kHkhjrMllxc2ZR1PS++UGBMvbW5VpXjhEkAkCwvbBXYS/YdXYGq OfdTFALQfM7+D8jm2wz1QHdTgDU2MZ4AT8NWMP+k= Received: from DFLE115.ent.ti.com (dfle115.ent.ti.com [10.64.6.36]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 2493A78B059239 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Sun, 8 May 2022 22:10:07 -0500 Received: from DFLE107.ent.ti.com (10.64.6.28) by DFLE115.ent.ti.com (10.64.6.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Sun, 8 May 2022 22:10:07 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE107.ent.ti.com (10.64.6.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Sun, 8 May 2022 22:10:07 -0500 Received: from [10.250.234.106] (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 2493A2Dg096241; Sun, 8 May 2022 22:10:03 -0500 Message-ID: <78a3cc4d-8ce4-0dae-2f4e-7522a0a3aa0b@ti.com> Date: Mon, 9 May 2022 08:40:02 +0530 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.8.1 Subject: Re: [PATCH v6 4/4] thermal: k3_j72xx_bandgap: Add the bandgap driver support Content-Language: en-US To: , , , , , , CC: , , References: <20220427064635.24898-1-j-keerthy@ti.com> <20220427064635.24898-5-j-keerthy@ti.com> From: "J, KEERTHY" In-Reply-To: <20220427064635.24898-5-j-keerthy@ti.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 4/27/2022 12:16 PM, Keerthy wrote: > Add VTM thermal support. In the Voltage Thermal Management > Module(VTM), K3 J72XX supplies a voltage reference and a temperature > sensor feature that are gathered in the band gap voltage and > temperature sensor (VBGAPTS) module. The band gap provides current and > voltage reference for its internal circuits and other analog IP > blocks. The analog-to-digital converter (ADC) produces an output value > that is proportional to the silicon temperature. > > Currently reading temperatures only is supported. There are no > active/passive cooling agent supported. > > J721e SoCs have errata i2128: https://www.ti.com/lit/pdf/sprz455 > > The VTM Temperature Monitors (TEMPSENSORs) are trimmed during production, > with the resulting values stored in software-readable registers. Software > should use these register values when translating the Temperature > Monitor output codes to temperature values. > > It has an involved workaround. Software needs to read the error codes for > -40C, 30C, 125C from the efuse for each device & derive a new look up table > for adc to temperature conversion. Involved calculating slopes & constants > using 3 different straight line equations with adc refernce codes as the > y-axis & error codes in the x-axis. > > -40C to 30C > 30C to 125C > 125C to 150C > > With the above 2 line equations we derive the full look-up table to > workaround the errata i2128 for j721e SoC. Hi Daniel, Any feedback on this series? Let me know. - Keerthy > > Tested temperature reading on J721e SoC & J7200 SoC. > > [daniel.lezcano@linaro.org: Generate look-up tables run-time] > Signed-off-by: Daniel Lezcano > Signed-off-by: Keerthy > --- > drivers/thermal/Makefile | 2 +- > drivers/thermal/k3_j72xx_bandgap.c | 566 +++++++++++++++++++++++++++++ > 2 files changed, 567 insertions(+), 1 deletion(-) > create mode 100644 drivers/thermal/k3_j72xx_bandgap.c > > diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile > index f0c36a1530d5..def8e1a0399c 100644 > --- a/drivers/thermal/Makefile > +++ b/drivers/thermal/Makefile > @@ -28,7 +28,7 @@ thermal_sys-$(CONFIG_CPU_IDLE_THERMAL) += cpuidle_cooling.o > # devfreq cooling > thermal_sys-$(CONFIG_DEVFREQ_THERMAL) += devfreq_cooling.o > > -obj-$(CONFIG_K3_THERMAL) += k3_bandgap.o > +obj-$(CONFIG_K3_THERMAL) += k3_bandgap.o k3_j72xx_bandgap.o > # platform thermal drivers > obj-y += broadcom/ > obj-$(CONFIG_THERMAL_MMIO) += thermal_mmio.o > diff --git a/drivers/thermal/k3_j72xx_bandgap.c b/drivers/thermal/k3_j72xx_bandgap.c > new file mode 100644 > index 000000000000..64e323158952 > --- /dev/null > +++ b/drivers/thermal/k3_j72xx_bandgap.c > @@ -0,0 +1,566 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * TI Bandgap temperature sensor driver for J72XX SoC Family > + * > + * Copyright (C) 2021 Texas Instruments Incorporated - http://www.ti.com/ > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +#define K3_VTM_DEVINFO_PWR0_OFFSET 0x4 > +#define K3_VTM_DEVINFO_PWR0_TEMPSENS_CT_MASK 0xf0 > +#define K3_VTM_TMPSENS0_CTRL_OFFSET 0x300 > +#define K3_VTM_MISC_CTRL_OFFSET 0xc > +#define K3_VTM_TMPSENS_STAT_OFFSET 0x8 > +#define K3_VTM_ANYMAXT_OUTRG_ALERT_EN 0x1 > +#define K3_VTM_MISC_CTRL2_OFFSET 0x10 > +#define K3_VTM_TS_STAT_DTEMP_MASK 0x3ff > +#define K3_VTM_MAX_NUM_TS 8 > +#define K3_VTM_TMPSENS_CTRL_SOC BIT(5) > +#define K3_VTM_TMPSENS_CTRL_CLRZ BIT(6) > +#define K3_VTM_TMPSENS_CTRL_CLKON_REQ BIT(7) > +#define K3_VTM_TMPSENS_CTRL_MAXT_OUTRG_EN BIT(11) > + > +#define K3_VTM_CORRECTION_TEMP_CNT 3 > + > +#define MINUS40CREF 5 > +#define PLUS30CREF 253 > +#define PLUS125CREF 730 > +#define PLUS150CREF 940 > + > +#define TABLE_SIZE 1024 > +#define MAX_TEMP 123000 > +#define COOL_DOWN_TEMP 105000 > + > +#define FACTORS_REDUCTION 13 > +static int *derived_table; > + > +static int compute_value(int index, const s64 *factors, int nr_factors, > + int reduction) > +{ > + s64 value = 0; > + int i; > + > + for (i = 0; i < nr_factors; i++) > + value += factors[i] * int_pow(index, i); > + > + return (int)div64_s64(value, int_pow(10, reduction)); > +} > + > +static void init_table(int factors_size, int *table, const s64 *factors) > +{ > + int i; > + > + for (i = 0; i < TABLE_SIZE; i++) > + table[i] = compute_value(i, factors, factors_size, > + FACTORS_REDUCTION); > +} > + > +/** > + * struct err_values - structure containing error/reference values > + * @refs: reference error values for -40C, 30C, 125C & 150C > + * @errs: Actual error values for -40C, 30C, 125C & 150C read from the efuse > + */ > +struct err_values { > + int refs[4]; > + int errs[4]; > +}; > + > +static void create_table_segments(struct err_values *err_vals, int seg, > + int *ref_table) > +{ > + int m = 0, c, num, den, i, err, idx1, idx2, err1, err2, ref1, ref2; > + > + if (seg == 0) > + idx1 = 0; > + else > + idx1 = err_vals->refs[seg]; > + > + idx2 = err_vals->refs[seg + 1]; > + err1 = err_vals->errs[seg]; > + err2 = err_vals->errs[seg + 1]; > + ref1 = err_vals->refs[seg]; > + ref2 = err_vals->refs[seg + 1]; > + > + /* > + * Calculate the slope with adc values read from the register > + * as the y-axis param and err in adc value as x-axis param > + */ > + num = ref2 - ref1; > + den = err2 - err1; > + if (den) > + m = num / den; > + c = ref2 - m * err2; > + > + /* > + * Take care of divide by zero error if error values are same > + * Or when the slope is 0 > + */ > + if (den != 0 && m != 0) { > + for (i = idx1; i <= idx2; i++) { > + err = (i - c) / m; > + if (((i + err) < 0) || ((i + err) >= TABLE_SIZE)) > + continue; > + derived_table[i] = ref_table[i + err]; > + } > + } else { /* Constant error take care of divide by zero */ > + for (i = idx1; i <= idx2; i++) { > + if (((i + err1) < 0) || ((i + err1) >= TABLE_SIZE)) > + continue; > + derived_table[i] = ref_table[i + err1]; > + } > + } > +} > + > +static int prep_lookup_table(struct err_values *err_vals, int *ref_table) > +{ > + int inc, i, seg; > + > + /* > + * Fill up the lookup table under 3 segments > + * region -40C to +30C > + * region +30C to +125C > + * region +125C to +150C > + */ > + for (seg = 0; seg < 3; seg++) > + create_table_segments(err_vals, seg, ref_table); > + > + /* Get to the first valid temperature */ > + i = 0; > + while (!derived_table[i]) > + i++; > + > + /* > + * Get to the last zero index and back fill the temperature for > + * sake of continuity > + */ > + if (i) { > + /* 300 milli celsius steps */ > + while (i--) > + derived_table[i] = derived_table[i + 1] - 300; > + /* case 0 */ > + derived_table[i] = derived_table[i + 1] - 300; > + } > + > + /* > + * Fill the last trailing 0s which are unfilled with increments of > + * 100 milli celsius till 1023 code > + */ > + i = TABLE_SIZE - 1; > + while (!derived_table[i]) > + i--; > + > + i++; > + inc = 1; > + while (i < TABLE_SIZE) { > + derived_table[i] = derived_table[i - 1] + inc * 100; > + i++; > + } > + > + return 0; > +} > + > +struct k3_thermal_data; > + > +struct k3_j72xx_bandgap { > + struct device *dev; > + void __iomem *base; > + void __iomem *cfg2_base; > + void __iomem *fuse_base; > + struct k3_thermal_data *ts_data[K3_VTM_MAX_NUM_TS]; > +}; > + > +/* common data structures */ > +struct k3_thermal_data { > + struct k3_j72xx_bandgap *bgp; > + u32 ctrl_offset; > + u32 stat_offset; > +}; > + > +static int two_cmp(int tmp, int mask) > +{ > + tmp = ~(tmp); > + tmp &= mask; > + tmp += 1; > + > + /* Return negative value */ > + return (0 - tmp); > +} > + > +static unsigned int vtm_get_best_value(unsigned int s0, unsigned int s1, > + unsigned int s2) > +{ > + int d01 = abs(s0 - s1); > + int d02 = abs(s0 - s2); > + int d12 = abs(s1 - s2); > + > + if (d01 <= d02 && d01 <= d12) > + return (s0 + s1) / 2; > + > + if (d02 <= d01 && d02 <= d12) > + return (s0 + s2) / 2; > + > + return (s1 + s2) / 2; > +} > + > +static inline int k3_bgp_read_temp(struct k3_thermal_data *devdata, > + int *temp) > +{ > + struct k3_j72xx_bandgap *bgp; > + unsigned int dtemp, s0, s1, s2; > + > + bgp = devdata->bgp; > + /* > + * Errata is applicable for am654 pg 1.0 silicon/J7ES. There > + * is a variation of the order for certain degree centigrade on AM654. > + * Work around that by getting the average of two closest > + * readings out of three readings everytime we want to > + * report temperatures. > + * > + * Errata workaround. > + */ > + s0 = readl(bgp->base + devdata->stat_offset) & > + K3_VTM_TS_STAT_DTEMP_MASK; > + s1 = readl(bgp->base + devdata->stat_offset) & > + K3_VTM_TS_STAT_DTEMP_MASK; > + s2 = readl(bgp->base + devdata->stat_offset) & > + K3_VTM_TS_STAT_DTEMP_MASK; > + dtemp = vtm_get_best_value(s0, s1, s2); > + > + if (dtemp < 0 || dtemp >= TABLE_SIZE) > + return -EINVAL; > + > + *temp = derived_table[dtemp]; > + > + return 0; > +} > + > +/* Get temperature callback function for thermal zone */ > +static int k3_thermal_get_temp(void *devdata, int *temp) > +{ > + struct k3_thermal_data *data = devdata; > + int ret = 0; > + > + ret = k3_bgp_read_temp(data, temp); > + if (ret) > + return ret; > + > + return ret; > +} > + > +static const struct thermal_zone_of_device_ops k3_of_thermal_ops = { > + .get_temp = k3_thermal_get_temp, > +}; > + > +static int k3_j72xx_bandgap_temp_to_adc_code(int temp) > +{ > + int low = 0, high = TABLE_SIZE - 1, mid; > + > + if (temp > 160000 || temp < -50000) > + return -EINVAL; > + > + /* Binary search to find the adc code */ > + while (low < (high - 1)) { > + mid = (low + high) / 2; > + if (temp <= derived_table[mid]) > + high = mid; > + else > + low = mid; > + } > + > + return mid; > +} > + > +static void get_efuse_values(int id, struct k3_thermal_data *data, int *err, > + struct k3_j72xx_bandgap *bgp) > +{ > + int i, tmp, pow; > + int ct_offsets[5][K3_VTM_CORRECTION_TEMP_CNT] = { > + { 0x0, 0x8, 0x4 }, > + { 0x0, 0x8, 0x4 }, > + { 0x0, -1, 0x4 }, > + { 0x0, 0xC, -1 }, > + { 0x0, 0xc, 0x8 } > + }; > + int ct_bm[5][K3_VTM_CORRECTION_TEMP_CNT] = { > + { 0x3f, 0x1fe000, 0x1ff }, > + { 0xfc0, 0x1fe000, 0x3fe00 }, > + { 0x3f000, 0x7f800000, 0x7fc0000 }, > + { 0xfc0000, 0x1fe0, 0x1f800000 }, > + { 0x3f000000, 0x1fe000, 0x1ff0 } > + }; > + > + for (i = 0; i < 3; i++) { > + /* Extract the offset value using bit-mask */ > + if (ct_offsets[id][i] == -1 && i == 1) { > + /* 25C offset Case of Sensor 2 split between 2 regs */ > + tmp = (readl(bgp->fuse_base + 0x8) & 0xE0000000) >> (29); > + tmp |= ((readl(bgp->fuse_base + 0xC) & 0x1F) << 3); > + pow = tmp & 0x80; > + } else if (ct_offsets[id][i] == -1 && i == 2) { > + /* 125C Case of Sensor 3 split between 2 regs */ > + tmp = (readl(bgp->fuse_base + 0x4) & 0xF8000000) >> (27); > + tmp |= ((readl(bgp->fuse_base + 0x8) & 0xF) << 5); > + pow = tmp & 0x100; > + } else { > + tmp = readl(bgp->fuse_base + ct_offsets[id][i]); > + tmp &= ct_bm[id][i]; > + tmp = tmp >> __ffs(ct_bm[id][i]); > + > + /* Obtain the sign bit pow*/ > + pow = ct_bm[id][i] >> __ffs(ct_bm[id][i]); > + pow += 1; > + pow /= 2; > + } > + > + /* Check for negative value */ > + if (tmp & pow) { > + /* 2's complement value */ > + tmp = two_cmp(tmp, ct_bm[id][i] >> __ffs(ct_bm[id][i])); > + } > + err[i] = tmp; > + } > + > + /* Err value for 150C is set to 0 */ > + err[i] = 0; > +} > + > +static void print_look_up_table(struct device *dev, int *ref_table) > +{ > + int i; > + > + dev_dbg(dev, "The contents of derived array\n"); > + dev_dbg(dev, "Code Temperature\n"); > + for (i = 0; i < TABLE_SIZE; i++) > + dev_dbg(dev, "%d %d %d\n", i, derived_table[i], ref_table[i]); > +} > + > +struct k3_j72xx_bandgap_data { > + unsigned int has_errata_i2128; > +}; > + > +static int k3_j72xx_bandgap_probe(struct platform_device *pdev) > +{ > + int ret = 0, cnt, val, id; > + int high_max, low_temp; > + struct resource *res; > + struct device *dev = &pdev->dev; > + struct k3_j72xx_bandgap *bgp; > + struct k3_thermal_data *data; > + int workaround_needed = 0; > + const struct k3_j72xx_bandgap_data *driver_data; > + struct thermal_zone_device *ti_thermal; > + int *ref_table; > + struct err_values err_vals; > + > + const s64 golden_factors[] = { > + -490019999999999936, > + 3251200000000000, > + -1705800000000, > + 603730000, > + -92627, > + }; > + > + const s64 pvt_wa_factors[] = { > + -415230000000000000, > + 3126600000000000, > + -1157800000000, > + }; > + > + bgp = devm_kzalloc(&pdev->dev, sizeof(*bgp), GFP_KERNEL); > + if (!bgp) > + return -ENOMEM; > + > + bgp->dev = dev; > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > + bgp->base = devm_ioremap_resource(dev, res); > + if (IS_ERR(bgp->base)) > + return PTR_ERR(bgp->base); > + > + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); > + bgp->cfg2_base = devm_ioremap_resource(dev, res); > + if (IS_ERR(bgp->cfg2_base)) > + return PTR_ERR(bgp->cfg2_base); > + > + res = platform_get_resource(pdev, IORESOURCE_MEM, 2); > + bgp->fuse_base = devm_ioremap_resource(dev, res); > + if (IS_ERR(bgp->fuse_base)) > + return PTR_ERR(bgp->fuse_base); > + > + driver_data = of_device_get_match_data(dev); > + if (driver_data) > + workaround_needed = driver_data->has_errata_i2128; > + > + pm_runtime_enable(dev); > + ret = pm_runtime_get_sync(dev); > + if (ret < 0) { > + pm_runtime_put_noidle(dev); > + pm_runtime_disable(dev); > + return ret; > + } > + > + /* Get the sensor count in the VTM */ > + val = readl(bgp->base + K3_VTM_DEVINFO_PWR0_OFFSET); > + cnt = val & K3_VTM_DEVINFO_PWR0_TEMPSENS_CT_MASK; > + cnt >>= __ffs(K3_VTM_DEVINFO_PWR0_TEMPSENS_CT_MASK); > + > + data = devm_kcalloc(bgp->dev, cnt, sizeof(*data), GFP_KERNEL); > + if (!data) { > + ret = -ENOMEM; > + goto err_alloc; > + } > + > + ref_table = kzalloc(sizeof(*ref_table) * TABLE_SIZE, GFP_KERNEL); > + if (!ref_table) { > + ret = -ENOMEM; > + goto err_alloc; > + } > + > + derived_table = devm_kzalloc(bgp->dev, sizeof(*derived_table) * TABLE_SIZE, > + GFP_KERNEL); > + if (!derived_table) { > + ret = -ENOMEM; > + goto err_alloc; > + } > + > + /* Workaround not needed if bit30/bit31 is set even for J721e */ > + if (workaround_needed && (readl(bgp->fuse_base + 0x0) & 0xc0000000) == 0xc0000000) > + workaround_needed = false; > + > + dev_dbg(bgp->dev, "Work around %sneeded\n", > + workaround_needed ? "not " : ""); > + > + if (!workaround_needed) > + init_table(5, ref_table, golden_factors); > + else > + init_table(3, ref_table, pvt_wa_factors); > + > + /* Register the thermal sensors */ > + for (id = 0; id < cnt; id++) { > + data[id].bgp = bgp; > + data[id].ctrl_offset = K3_VTM_TMPSENS0_CTRL_OFFSET + id * 0x20; > + data[id].stat_offset = data[id].ctrl_offset + > + K3_VTM_TMPSENS_STAT_OFFSET; > + > + if (workaround_needed) { > + /* ref adc values for -40C, 30C & 125C respectively */ > + err_vals.refs[0] = MINUS40CREF; > + err_vals.refs[1] = PLUS30CREF; > + err_vals.refs[2] = PLUS125CREF; > + err_vals.refs[3] = PLUS150CREF; > + get_efuse_values(id, &data[id], err_vals.errs, bgp); > + } > + > + if (id == 0 && workaround_needed) > + prep_lookup_table(&err_vals, ref_table); > + else if (id == 0 && !workaround_needed) > + memcpy(derived_table, ref_table, TABLE_SIZE * 4); > + > + val = readl(data[id].bgp->cfg2_base + data[id].ctrl_offset); > + val |= (K3_VTM_TMPSENS_CTRL_MAXT_OUTRG_EN | > + K3_VTM_TMPSENS_CTRL_SOC | > + K3_VTM_TMPSENS_CTRL_CLRZ | BIT(4)); > + writel(val, data[id].bgp->cfg2_base + data[id].ctrl_offset); > + > + bgp->ts_data[id] = &data[id]; > + ti_thermal = > + devm_thermal_zone_of_sensor_register(bgp->dev, id, > + &data[id], > + &k3_of_thermal_ops); > + if (IS_ERR(ti_thermal)) { > + dev_err(bgp->dev, "thermal zone device is NULL\n"); > + ret = PTR_ERR(ti_thermal); > + goto err_alloc; > + } > + } > + > + /* > + * Program TSHUT thresholds > + * Step 1: set the thresholds to ~123C and 105C WKUP_VTM_MISC_CTRL2 > + * Step 2: WKUP_VTM_TMPSENS_CTRL_j set the MAXT_OUTRG_EN bit > + * This is already taken care as per of init > + * Step 3: WKUP_VTM_MISC_CTRL set the ANYMAXT_OUTRG_ALERT_EN bit > + */ > + high_max = k3_j72xx_bandgap_temp_to_adc_code(MAX_TEMP); > + low_temp = k3_j72xx_bandgap_temp_to_adc_code(COOL_DOWN_TEMP); > + > + writel((low_temp << 16) | high_max, data[0].bgp->cfg2_base + > + K3_VTM_MISC_CTRL2_OFFSET); > + mdelay(100); > + writel(K3_VTM_ANYMAXT_OUTRG_ALERT_EN, data[0].bgp->cfg2_base + > + K3_VTM_MISC_CTRL_OFFSET); > + > + platform_set_drvdata(pdev, bgp); > + > + print_look_up_table(dev, ref_table); > + /* > + * Now that the derived_table has the appropriate look up values > + * Free up the ref_table > + */ > + kfree(ref_table); > + > + return 0; > + > +err_alloc: > + pm_runtime_put_sync(&pdev->dev); > + pm_runtime_disable(&pdev->dev); > + > + return ret; > +} > + > +static int k3_j72xx_bandgap_remove(struct platform_device *pdev) > +{ > + pm_runtime_put_sync(&pdev->dev); > + pm_runtime_disable(&pdev->dev); > + > + return 0; > +} > + > +const struct k3_j72xx_bandgap_data k3_j72xx_bandgap_j721e_data = { > + .has_errata_i2128 = 1, > +}; > + > +const struct k3_j72xx_bandgap_data k3_j72xx_bandgap_j7200_data = { > + .has_errata_i2128 = 0, > +}; > + > +static const struct of_device_id of_k3_j72xx_bandgap_match[] = { > + { > + .compatible = "ti,j721e-vtm", > + .data = &k3_j72xx_bandgap_j721e_data, > + }, > + { > + .compatible = "ti,j7200-vtm", > + .data = &k3_j72xx_bandgap_j7200_data, > + }, > + { /* sentinel */ }, > +}; > +MODULE_DEVICE_TABLE(of, of_k3_j72xx_bandgap_match); > + > +static struct platform_driver k3_j72xx_bandgap_sensor_driver = { > + .probe = k3_j72xx_bandgap_probe, > + .remove = k3_j72xx_bandgap_remove, > + .driver = { > + .name = "k3-j72xx-soc-thermal", > + .of_match_table = of_k3_j72xx_bandgap_match, > + }, > +}; > + > +module_platform_driver(k3_j72xx_bandgap_sensor_driver); > + > +MODULE_DESCRIPTION("K3 bandgap temperature sensor driver"); > +MODULE_LICENSE("GPL"); > +MODULE_AUTHOR("J Keerthy ");