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GET /api/patches/809538/?format=api
{ "id": 809538, "url": "http://patchwork.ozlabs.org/api/patches/809538/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/1504506242-31430-7-git-send-email-rajesh.bhagat@nxp.com/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/projects/18/?format=api", "name": "U-Boot", "link_name": "uboot", "list_id": "u-boot.lists.denx.de", "list_email": "u-boot@lists.denx.de", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1504506242-31430-7-git-send-email-rajesh.bhagat@nxp.com>", "list_archive_url": null, "date": "2017-09-04T06:24:01", "name": "[U-Boot,RESEND,v3,6/7] board: common: vid: Add support for LTC3882 voltage regulator chip", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": false, "hash": "96e7ee48800f41d1392bb6521df00f2f2cf22619", "submitter": { "id": 68498, "url": "http://patchwork.ozlabs.org/api/people/68498/?format=api", "name": "Rajesh Bhagat", "email": "rajesh.bhagat@nxp.com" }, "delegate": { "id": 2666, "url": "http://patchwork.ozlabs.org/api/users/2666/?format=api", "username": "yorksun", "first_name": "York", "last_name": "Sun", "email": "yorksun@freescale.com" }, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/1504506242-31430-7-git-send-email-rajesh.bhagat@nxp.com/mbox/", "series": [ { "id": 1314, "url": "http://patchwork.ozlabs.org/api/series/1314/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/list/?series=1314", "date": "2017-09-04T06:23:56", "name": "Add VID support for QDS and RDB platforms", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/1314/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/809538/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/809538/checks/", "tags": {}, "related": [], "headers": { "Return-Path": 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"To": "<u-boot@lists.denx.de>", "Date": "Mon, 4 Sep 2017 11:54:01 +0530", "Message-ID": "<1504506242-31430-7-git-send-email-rajesh.bhagat@nxp.com>", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1504506242-31430-1-git-send-email-rajesh.bhagat@nxp.com>", "References": "<1504506242-31430-1-git-send-email-rajesh.bhagat@nxp.com>", "X-EOPAttributedMessage": "0", "X-Matching-Connectors": "131489798645772512;\n\t(91ab9b29-cfa4-454e-5278-08d120cd25b8); ()", "X-Forefront-Antispam-Report": "CIP:192.88.168.50; IPV:NLI; CTRY:US; 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PCL:0;\n\tRULEID:(100000700101)(100105000095)(100000701101)(100105300095)(100000702101)(100105100095)(6095135)(2401047)(8121501046)(5005006)(10201501046)(100000703101)(100105400095)(3002001)(93006095)(93001095)(6055026)(6096035)(201703131430075)(201703131433075)(201703131448075)(201703161259150)(201703151042153)(20161123565025)(20161123559100)(20161123563025)(20161123556025)(20161123561025)(201708071742011)(100000704101)(100105200095)(100000705101)(100105500095);\n\tSRVR:SN2PR03MB2270; BCL:0; PCL:0;\n\tRULEID:(100000800101)(100110000095)(100000801101)(100110300095)(100000802101)(100110100095)(100000803101)(100110400095)(400006)(100000804101)(100110200095)(100000805101)(100110500095);\n\tSRVR:SN2PR03MB2270; ", "X-Forefront-PRVS": "0420213CCD", "SpamDiagnosticOutput": "1:99", "SpamDiagnosticMetadata": "NSPM", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "04 Sep 2017 06:24:24.2808\n\t(UTC)", "X-MS-Exchange-CrossTenant-Id": "5afe0b00-7697-4969-b663-5eab37d5f47e", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "TenantId=5afe0b00-7697-4969-b663-5eab37d5f47e;\n\tIp=[192.88.168.50]; \n\tHelo=[tx30smr01.am.freescale.net]", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "SN2PR03MB2270", "Subject": "[U-Boot] [RESEND PATCH v3 6/7] board: common: vid: Add support for\n\tLTC3882 voltage regulator chip", "X-BeenThere": "u-boot@lists.denx.de", "X-Mailman-Version": "2.1.18", "Precedence": "list", "List-Id": "U-Boot discussion <u-boot.lists.denx.de>", "List-Unsubscribe": "<https://lists.denx.de/options/u-boot>,\n\t<mailto:u-boot-request@lists.denx.de?subject=unsubscribe>", "List-Archive": "<http://lists.denx.de/pipermail/u-boot/>", "List-Post": "<mailto:u-boot@lists.denx.de>", "List-Help": "<mailto:u-boot-request@lists.denx.de?subject=help>", "List-Subscribe": "<https://lists.denx.de/listinfo/u-boot>,\n\t<mailto:u-boot-request@lists.denx.de?subject=subscribe>", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "base64", "Errors-To": "u-boot-bounces@lists.denx.de", "Sender": "\"U-Boot\" <u-boot-bounces@lists.denx.de>" }, "content": "Restructures common driver to support LTC3882 voltage regulator\nchip.\n\nSigned-off-by: Ashish Kumar <Ashish.Kumar@nxp.com>\nSigned-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>\n---\nChanges in v3:\n Restructured LS1088A VID support to use common VID driver\n Added the coding for voltage in comments i.e. 1/4096V\n Removed APIs getLSB/MSB and used bit operations.\n\nChanges in v2:\n Checkpatch errors fixed\n\n .../include/asm/arch-fsl-layerscape/immap_lsch3.h | 9 ++-\n board/freescale/common/vid.c | 76 ++++++++++++++++++++++\n include/configs/ls1088aqds.h | 16 +++++\n include/configs/ls1088ardb.h | 15 +++++\n 4 files changed, 114 insertions(+), 2 deletions(-)", "diff": "diff --git a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h\nindex 2706ea8..1394b75 100644\n--- a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h\n+++ b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h\n@@ -184,10 +184,15 @@ struct ccsr_gur {\n \tu32\tgpporcr3;\n \tu32\tgpporcr4;\n \tu8\tres_030[0x60-0x30];\n-#define FSL_CHASSIS3_DCFG_FUSESR_VID_SHIFT\t2\n #define FSL_CHASSIS3_DCFG_FUSESR_VID_MASK\t0x1F\n-#define FSL_CHASSIS3_DCFG_FUSESR_ALTVID_SHIFT\t7\n #define FSL_CHASSIS3_DCFG_FUSESR_ALTVID_MASK\t0x1F\n+#if defined(CONFIG_ARCH_LS1088A)\n+#define FSL_CHASSIS3_DCFG_FUSESR_VID_SHIFT\t25\n+#define FSL_CHASSIS3_DCFG_FUSESR_ALTVID_SHIFT\t20\n+#else\n+#define FSL_CHASSIS3_DCFG_FUSESR_VID_SHIFT\t2\n+#define FSL_CHASSIS3_DCFG_FUSESR_ALTVID_SHIFT\t7\n+#endif\n \tu32\tdcfg_fusesr;\t/* Fuse status register */\n \tu8\tres_064[0x70-0x64];\n \tu32\tdevdisr;\t/* Device disable control 1 */\ndiff --git a/board/freescale/common/vid.c b/board/freescale/common/vid.c\nindex cdf877d..42201d3 100644\n--- a/board/freescale/common/vid.c\n+++ b/board/freescale/common/vid.c\n@@ -171,6 +171,36 @@ static int read_voltage_from_IR(int i2caddress)\n }\n #endif\n \n+#ifdef CONFIG_VOL_MONITOR_LTC3882_READ\n+/* read the current value of the LTC Regulator Voltage */\n+static int read_voltage_from_LTC(int i2caddress)\n+{\n+\tint ret, vcode = 0;\n+\tu8 chan = PWM_CHANNEL0;\n+\n+\t/* select the PAGE 0 using PMBus commands PAGE for VDD*/\n+\tret = i2c_write(I2C_VOL_MONITOR_ADDR,\n+\t\t\tPMBUS_CMD_PAGE, 1, &chan, 1);\n+\tif (ret) {\n+\t\tprintf(\"VID: failed to select VDD Page 0\\n\");\n+\t\treturn ret;\n+\t}\n+\n+\t/*read the output voltage using PMBus command READ_VOUT*/\n+\tret = i2c_read(I2C_VOL_MONITOR_ADDR,\n+\t\t PMBUS_CMD_READ_VOUT, 1, (void *)&vcode, 2);\n+\tif (ret) {\n+\t\tprintf(\"VID: failed to read the volatge\\n\");\n+\t\treturn ret;\n+\t}\n+\n+\t/* Scale down to the real mV as LTC resolution is 1/4096V,rounding up */\n+\tvcode = DIV_ROUND_UP(vcode * 1000, 4096);\n+\n+\treturn vcode;\n+}\n+#endif\n+\n static int read_voltage(int i2caddress)\n {\n \tint voltage_read;\n@@ -178,6 +208,8 @@ static int read_voltage(int i2caddress)\n \tvoltage_read = read_voltage_from_INA220(i2caddress);\n #elif defined CONFIG_VOL_MONITOR_IR36021_READ\n \tvoltage_read = read_voltage_from_IR(i2caddress);\n+#elif defined CONFIG_VOL_MONITOR_LTC3882_READ\n+\tvoltage_read = read_voltage_from_LTC(i2caddress);\n #else\n \treturn -1;\n #endif\n@@ -278,6 +310,42 @@ static int set_voltage_to_IR(int i2caddress, int vdd)\n \tdebug(\"VID: Current voltage is %d mV\\n\", vdd_last);\n \treturn vdd_last;\n }\n+\n+#endif\n+\n+#ifdef CONFIG_VOL_MONITOR_LTC3882_SET\n+/* this function sets the VDD and returns the value set */\n+static int set_voltage_to_LTC(int i2caddress, int vdd)\n+{\n+\tint ret, vdd_last, vdd_target = vdd;\n+\n+\t/* Scale up to the LTC resolution is 1/4096V */\n+\tvdd = (vdd * 4096) / 1000;\n+\n+\t/* 5-byte buffer which needs to be sent following the\n+\t * PMBus command PAGE_PLUS_WRITE.\n+\t */\n+\tu8 buff[5] = {0x04, PWM_CHANNEL0, PMBUS_CMD_VOUT_COMMAND,\n+\t\t\tvdd & 0xFF, (vdd & 0xFF00) >> 8};\n+\n+\t/* Write the desired voltage code to the regulator */\n+\tret = i2c_write(I2C_VOL_MONITOR_ADDR,\n+\t\t\tPMBUS_CMD_PAGE_PLUS_WRITE, 1, (void *)&buff, 5);\n+\tif (ret) {\n+\t\tprintf(\"VID: I2C failed to write to the volatge regulator\\n\");\n+\t\treturn -1;\n+\t}\n+\n+\t/* Wait for the volatge to get to the desired value */\n+\tdo {\n+\t\tvdd_last = read_voltage_from_LTC(i2caddress);\n+\t\tif (vdd_last < 0) {\n+\t\t\tprintf(\"VID: Couldn't read sensor abort VID adjust\\n\");\n+\t\t\treturn -1;\n+\t\t}\n+\t} while (vdd_last != vdd_target);\n+\treturn vdd_last;\n+}\n #endif\n \n static int set_voltage(int i2caddress, int vdd)\n@@ -286,6 +354,8 @@ static int set_voltage(int i2caddress, int vdd)\n \n #ifdef CONFIG_VOL_MONITOR_IR36021_SET\n \tvdd_last = set_voltage_to_IR(i2caddress, vdd);\n+#elif defined CONFIG_VOL_MONITOR_LTC3882_SET\n+\tvdd_last = set_voltage_to_LTC(i2caddress, vdd);\n #else\n \t#error Specific voltage monitor must be defined\n #endif\n@@ -452,6 +522,11 @@ int adjust_vdd(ulong vdd_override)\n \t}\n \tvdd_current = vdd_last;\n \tdebug(\"VID: Core voltage is currently at %d mV\\n\", vdd_last);\n+\n+#ifdef CONFIG_VOL_MONITOR_LTC3882_SET\n+\t/* Set the target voltage */\n+\tvdd_last = vdd_current = set_voltage(i2caddress, vdd_target);\n+#else\n \t/*\n \t * Adjust voltage to at or one step above target.\n \t * As measurements are less precise than setting the values\n@@ -469,6 +544,7 @@ int adjust_vdd(ulong vdd_override)\n \t\tvdd_last = set_voltage(i2caddress, vdd_current);\n \t}\n \n+#endif\n \tif (board_adjust_vdd(vdd_target) < 0) {\n \t\tret = -1;\n \t\tgoto exit;\ndiff --git a/include/configs/ls1088aqds.h b/include/configs/ls1088aqds.h\nindex 3547b0b..8ae98e1 100644\n--- a/include/configs/ls1088aqds.h\n+++ b/include/configs/ls1088aqds.h\n@@ -277,6 +277,22 @@ unsigned long get_board_ddr_clk(void);\n #define I2C_MUX_CH_DEFAULT\t\t0x8\n #define I2C_MUX_CH5\t\t\t0xD\n \n+#define I2C_MUX_CH_VOL_MONITOR 0xA\n+\n+/* Voltage monitor on channel 2*/\n+#define I2C_VOL_MONITOR_ADDR 0x63\n+#define I2C_VOL_MONITOR_BUS_V_OFFSET 0x2\n+#define I2C_VOL_MONITOR_BUS_V_OVF 0x1\n+#define I2C_VOL_MONITOR_BUS_V_SHIFT 3\n+\n+/* PM Bus commands code for LTC3882*/\n+#define PMBUS_CMD_PAGE 0x0\n+#define PMBUS_CMD_READ_VOUT 0x8B\n+#define PMBUS_CMD_PAGE_PLUS_WRITE 0x05\n+#define PMBUS_CMD_VOUT_COMMAND 0x21\n+\n+#define PWM_CHANNEL0 0x0\n+\n /*\n * RTC configuration\n */\ndiff --git a/include/configs/ls1088ardb.h b/include/configs/ls1088ardb.h\nindex d943fa4..86fa033 100644\n--- a/include/configs/ls1088ardb.h\n+++ b/include/configs/ls1088ardb.h\n@@ -210,6 +210,21 @@\n \n #define CONFIG_SYS_LS_MC_BOOT_TIMEOUT_MS 5000\n \n+#define I2C_MUX_CH_VOL_MONITOR 0xA\n+/* Voltage monitor on channel 2*/\n+#define I2C_VOL_MONITOR_ADDR 0x63\n+#define I2C_VOL_MONITOR_BUS_V_OFFSET 0x2\n+#define I2C_VOL_MONITOR_BUS_V_OVF 0x1\n+#define I2C_VOL_MONITOR_BUS_V_SHIFT 3\n+\n+/* PM Bus commands code for LTC3882*/\n+#define PMBUS_CMD_PAGE 0x0\n+#define PMBUS_CMD_READ_VOUT 0x8B\n+#define PMBUS_CMD_PAGE_PLUS_WRITE 0x05\n+#define PMBUS_CMD_VOUT_COMMAND 0x21\n+\n+#define PWM_CHANNEL0 0x0\n+\n /*\n * I2C bus multiplexer\n */\n", "prefixes": [ "U-Boot", "RESEND", "v3", "6/7" ] }