fby35: ji: Dynamic set spi frequency (#2040)

Summary:
- Support dynamic set spi frequency function in driver. Note that re-init(**spi_nor_re_init**) action is needed after frequency-set(**spi_nor_set_freq**).
- Set spi1-cs0 default frequency from 50M to 5M.
- Modify spi1-cs0 from 5M to 50M in runtime only if using PVT2 system.

TestPlan:
- BuildCode: PASS
- Measure PVT1 and PVT2 BIOS update frequency: PASS

Pull Request resolved: #2040

Reviewed By: jagpalgill

Differential Revision: D64942542

fbshipit-source-id: f19931ef50ca7f71784bed53083491042702e9c7

fix_patch/tag_v00.01.06_d014527731033db477f806f5bff2e1ca5d4b2ba7/0083-spi-aspeed-Support-dynamic-set-spi-frequency.patch

@@ -0,0 +1,44 @@
+From 4187e66745fd164a85a9b5b1f2a64a639f5ae2ef Mon Sep 17 00:00:00 2001
+From: MouchenHung <[email protected]>
+Date: Fri, 25 Oct 2024 10:36:47 +0800
+Subject: [PATCH] spi: Support dynamic set spi frequency
+
+---
+ drivers/flash/spi_nor_multi_dev.c | 8 ++++++++
+ include/drivers/spi_nor.h         | 1 +
+ 2 files changed, 9 insertions(+)
+
+diff --git a/drivers/flash/spi_nor_multi_dev.c b/drivers/flash/spi_nor_multi_dev.c
+index 6595161c07..5dae866362 100644
+--- a/drivers/flash/spi_nor_multi_dev.c
++++ b/drivers/flash/spi_nor_multi_dev.c
+@@ -1713,6 +1713,14 @@ int spi_nor_re_init(const struct device *dev)
+ 	return spi_nor_configure(dev);
+ }
+
++int spi_nor_set_freq(const struct device *dev, uint32_t freq)
++{
++	struct spi_nor_data *data = dev->data;
++	data->spi_cfg.frequency = freq;
++
++	return 0;
++}
++
+ /**
+  * @brief Initialize and configure the flash
+  *
+diff --git a/include/drivers/spi_nor.h b/include/drivers/spi_nor.h
+index 42e13a9cff..aea16b6f96 100644
+--- a/include/drivers/spi_nor.h
++++ b/include/drivers/spi_nor.h
+@@ -141,6 +141,7 @@ struct spi_nor_op_info {
+
+ int spi_nor_config_4byte_mode(const struct device *dev, bool en4b);
+ int spi_nor_re_init(const struct device *dev);
++int spi_nor_set_freq(const struct device *dev, uint32_t freq);
+ int spi_nor_erase_by_cmd(const struct device *dev, off_t addr,
+ 			 size_t size, uint8_t cmd);
+ int spi_nor_get_erase_sz(const struct device *dev, uint8_t cmd);
+-- 
+2.17.1
+

meta-facebook/yv35-ji/boards/ast1030_evb.overlay

@@ -151,7 +151,7 @@
 &spi1_cs0 {
 	status = "okay";
 	spi-max-buswidth = <4>;
-	spi-max-frequency = <50000000>;
+	spi-max-frequency = <5000000>;
 	re-init-support;
 };
 

meta-facebook/yv35-ji/src/lib/plat_spi.c

@@ -18,6 +18,7 @@
 #include "hal_i2c.h"
 #include "plat_gpio.h"
 #include "plat_i2c.h"
+#include "plat_class.h"
 #include "util_spi.h"
 #include <logging/log.h>
 
@@ -49,3 +50,20 @@ bool pal_switch_bios_spi_mux(int gpio_status)
 
 	return true;
 }
+
+#define BIOS_SPI_DRIVER "spi1_cs0"
+#define SPI_FREQ_50M 50000000
+void switch_spi_freq()
+{
+	const struct device *flash_dev;
+	flash_dev = device_get_binding(BIOS_SPI_DRIVER);
+	if (!flash_dev) {
+		LOG_ERR("Can't find any binding device with label %s", BIOS_SPI_DRIVER);
+	}
+	if (get_board_revision() != SYS_BOARD_PVT2) {
+		spi_nor_set_freq(flash_dev, SPI_FREQ_50M);
+		LOG_INF("Try to set SPI frequency to 50MHz");
+	} else {
+		LOG_INF("Use default SPI frequency 5MHz");
+	}
+}

meta-facebook/yv35-ji/src/lib/plat_spi.h

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef PLAT_SPI_H
+#define PLAT_SPI_H
+
+void switch_spi_freq();
+
+#endif

meta-facebook/yv35-ji/src/platform/plat_class.h

@@ -42,6 +42,8 @@ enum BIC_BOARD_REVISION {
 	SYS_BOARD_DVT,
 	SYS_BOARD_PVT,
 	SYS_BOARD_PVT2,
+	SYS_BOARD_PVT2_5,
+	SYS_BOARD_MP,
 };
 
 typedef struct _CARD_STATUS_ {

meta-facebook/yv35-ji/src/platform/plat_init.c

@@ -23,6 +23,7 @@
 #include "plat_sensor_table.h"
 #include "plat_power_status.h"
 #include "plat_fru.h"
+#include "plat_spi.h"
 #include "util_worker.h"
 #include "power_status.h"
 #include <stdio.h>
@@ -74,6 +75,8 @@ void pal_post_init()
 		LOG_INF("Try to access SatMC...");
 		satmc_status_update();
 	}
+
+	switch_spi_freq();
 }
 
 void pal_device_init()