linux-toradex: change kernel recipe to linux-toradex_5.4-2.3.x.bb

Switch to linux-toradex branch toradex_5.4-2.3.x-imx

Related-to: ELB-3513, ELB-3515, ELB-3509
Signed-off-by: Denys Drozdov <denys.drozdov@toradex.com>
(cherry picked from commit 93c2fe20206766c424a4d6d879045bbbe8a56479)

6 files changed, 114 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-toradex-5.4-2.3.x/0001-imx_sc_thermal-prevent-BUG-with-rt-patch.patch b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/0001-imx_sc_thermal-prevent-BUG-with-rt-patch.patch
new file mode 100644
index 0000000..4dc1dae
--- /dev/null
+++ b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/0001-imx_sc_thermal-prevent-BUG-with-rt-patch.patch
@@ -0,0 +1,53 @@
+From 4e6114a23a21db5741375070add8ccc16697db67 Mon Sep 17 00:00:00 2001
+From: Max Krummenacher <max.krummenacher@toradex.com>
+Date: Tue, 24 Sep 2019 14:15:50 +0200
+Subject: [PATCH 1/2] imx_sc_thermal: prevent BUG() with rt patch
+
+With the RT patch applied the kernel prints a BUG backtrace during boot:
+
+| BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1
+
+Prevent this by avoiding the smp_processor_id call and just check both
+CPU clusters which may be there in a i.MX8 series SoC.
+
+Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
+---
+ drivers/thermal/imx_sc_thermal.c | 13 +++++++------
+ 1 file changed, 7 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/thermal/imx_sc_thermal.c b/drivers/thermal/imx_sc_thermal.c
+index 8c5049020cd8..51a6c73315ba 100644
+--- a/drivers/thermal/imx_sc_thermal.c
++++ b/drivers/thermal/imx_sc_thermal.c
+@@ -58,6 +58,7 @@ sc_ipc_t tsens_ipcHandle;
+ static int imx_sc_tsens_get_temp(void *data, int *temp)
+ {
+ 	struct imx_sc_sensor *sensor = data;
++	int hw_id;
+ 	sc_err_t sciErr;
+ 	int16_t celsius;
+ 	int8_t tenths;
+@@ -65,14 +66,14 @@ static int imx_sc_tsens_get_temp(void *data, int *temp)
+ 	sciErr = sc_misc_get_temp(tsens_ipcHandle, sensor->hw_id,
+ 			SC_C_TEMP, &celsius, &tenths);
+ 	/*
+-	 * if the SS power domain is down, read temp will fail, so
+-	 * we can return the temp of CPU domain instead.
++	 * if the SS power domain is down, read temp will fail,
++	 * try the temp of the potentially two CPU domains instead.
+ 	 */
+-	if (sciErr != SC_ERR_NONE) {
+-		sciErr = sc_misc_get_temp(tsens_ipcHandle,
+-			sensor_hw_id[topology_physical_package_id(smp_processor_id())],
++	hw_id = 0;
++	while (sciErr != SC_ERR_NONE) {
++		sciErr = sc_misc_get_temp(tsens_ipcHandle, sensor_hw_id[hw_id++],
+ 			SC_C_TEMP, &celsius, &tenths);
+-		if (sciErr != SC_ERR_NONE) {
++		if (hw_id > 1) {
+ 			pr_err("read temp sensor:%d failed\n", sensor->hw_id);
+ 			return -EINVAL;
+ 		}
+-- 
+2.20.1
+
diff --git a/recipes-kernel/linux/linux-toradex-5.4-2.3.x/0002-ddr-perf-prevent-BUG-with-rt-patch.patch b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/0002-ddr-perf-prevent-BUG-with-rt-patch.patch
new file mode 100644
index 0000000..9296878
--- /dev/null
+++ b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/0002-ddr-perf-prevent-BUG-with-rt-patch.patch
@@ -0,0 +1,34 @@
+From 066e66d9222f70d3e21a7df077ac6b623881c9cc Mon Sep 17 00:00:00 2001
+From: Max Krummenacher <max.krummenacher@toradex.com>
+Date: Tue, 24 Sep 2019 14:19:24 +0200
+Subject: [PATCH 2/2] ddr-perf: prevent BUG() with rt patch
+
+With the RT patch applied the kernel prints a BUG backtrace during boot:
+
+| BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1
+
+Prevent this by replacing the smp_processor_id() call with a get_cpu() ..
+put_cpu() construct.
+
+Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
+---
+ drivers/perf/ddr-perf.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/perf/ddr-perf.c b/drivers/perf/ddr-perf.c
+index 73fe52ee8b95..744a6454d6a4 100644
+--- a/drivers/perf/ddr-perf.c
++++ b/drivers/perf/ddr-perf.c
+@@ -470,7 +470,8 @@ static int ddr_perf_probe(struct platform_device *pdev)
+ 
+ 	pmu->devtype = (struct fsl_ddr_devtype_data *)of_id->data;
+ 
+-	cpumask_set_cpu(smp_processor_id(), &pmu->cpu);
++	cpumask_set_cpu(get_cpu(), &pmu->cpu);
++	put_cpu();
+ 	ret = perf_pmu_register(&(pmu->pmu), name, -1);
+ 	if (ret)
+ 		goto ddr_perf_err;
+-- 
+2.20.1
+
diff --git a/recipes-kernel/linux/linux-toradex-5.4-2.3.x/preempt-rt-less-latency.cfg b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/preempt-rt-less-latency.cfg
new file mode 100644
index 0000000..a9c88bd
--- /dev/null
+++ b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/preempt-rt-less-latency.cfg
@@ -0,0 +1,14 @@
+# CONFIG_PM_DEBUG is not set
+# CONFIG_6LOWPAN_DEBUGFS is not set
+# CONFIG_BT_DEBUGFS is not set
+# CONFIG_ATH9K_DEBUGFS is not set
+# CONFIG_ATH9K_HTC_DEBUGFS is not set
+# CONFIG_ATH10K_DEBUGFS is not set
+# CONFIG_RTLWIFI_DEBUG is not set
+# CONFIG_IEEE802154_AT86RF230_DEBUGFS is not set
+# CONFIG_DYNAMIC_DEBUG is not set
+# CONFIG_DETECT_HUNG_TASK is not set
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_CORESIGHT is not set
diff --git a/recipes-kernel/linux/linux-toradex-5.4-2.3.x/preempt-rt-less-latency.scc b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/preempt-rt-less-latency.scc
new file mode 100644
index 0000000..edd1519
--- /dev/null
+++ b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/preempt-rt-less-latency.scc
@@ -0,0 +1,4 @@
+define KFEATURE_DESCRIPTION "Disable configs that could lead to preempt-rt latency"
+define KFEATURE_COMPATIBILITY board
+
+kconf non-hardware preempt-rt-less-latency.cfg
diff --git a/recipes-kernel/linux/linux-toradex-5.4-2.3.x/preempt-rt.cfg b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/preempt-rt.cfg
new file mode 100644
index 0000000..f76e447
--- /dev/null
+++ b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/preempt-rt.cfg
@@ -0,0 +1,5 @@
+CONFIG_EXPERT=y
+# CONFIG_PREEMPT_NONE is not set
+# CONFIG_PREEMPT_VOLUNTARY is not set
+# CONFIG_PREEMPT is not set
+CONFIG_PREEMPT_RT=y
diff --git a/recipes-kernel/linux/linux-toradex-5.4-2.3.x/preempt-rt.scc b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/preempt-rt.scc
new file mode 100644
index 0000000..82d27dc
--- /dev/null
+++ b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/preempt-rt.scc
@@ -0,0 +1,4 @@
+define KFEATURE_DESCRIPTION "Enable Features needed by preempt-rt"
+define KFEATURE_COMPATIBILITY board
+
+kconf non-hardware preempt-rt.cfg