From: Devarsh Thakkar <devarsht@ti.com>
To: <andersson@kernel.org>, <mathieu.poirier@linaro.org>,
<p.zabel@pengutronix.de>, <linux-remoteproc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <s-anna@ti.com>
Cc: <hnagalla@ti.com>, <praneeth@ti.com>, <nm@ti.com>,
<vigneshr@ti.com>, <a-bhatia1@ti.com>, <j-luthra@ti.com>
Subject: [PATCH 2/2] remoteproc: k3-r5: Use separate compatible string for TI AM62 SoC family
Date: Tue, 15 Nov 2022 11:39:34 +0530 [thread overview]
Message-ID: <20221115060934.13279-3-devarsht@ti.com> (raw)
In-Reply-To: <20221115060934.13279-1-devarsht@ti.com>
AM62 and AM62A SoCs use single core R5F which is a new scenario
different than the one being used with CLUSTER_MODE_SINGLECPU
which is for utilizing a single core from a set of cores available
in R5F cluster present in the SoC.
To support this single core scenario map it with
newly defined CLUSTER_MODE_NONE and use it when
compatible is set to ti,am62-r5fss.
Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
---
drivers/remoteproc/ti_k3_r5_remoteproc.c | 55 ++++++++++++++++++------
1 file changed, 43 insertions(+), 12 deletions(-)
diff --git a/drivers/remoteproc/ti_k3_r5_remoteproc.c b/drivers/remoteproc/ti_k3_r5_remoteproc.c
index 0481926c6975..b5adcaa3d3a4 100644
--- a/drivers/remoteproc/ti_k3_r5_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_r5_remoteproc.c
@@ -74,11 +74,13 @@ struct k3_r5_mem {
* Split mode : AM65x, J721E, J7200 and AM64x SoCs
* LockStep mode : AM65x, J721E and J7200 SoCs
* Single-CPU mode : AM64x SoCs only
+ * None : AM62x, AM62A SoCs
*/
enum cluster_mode {
CLUSTER_MODE_SPLIT = 0,
CLUSTER_MODE_LOCKSTEP,
CLUSTER_MODE_SINGLECPU,
+ CLUSTER_MODE_NONE,
};
/**
@@ -86,11 +88,13 @@ enum cluster_mode {
* @tcm_is_double: flag to denote the larger unified TCMs in certain modes
* @tcm_ecc_autoinit: flag to denote the auto-initialization of TCMs for ECC
* @single_cpu_mode: flag to denote if SoC/IP supports Single-CPU mode
+ * @is_single_core: flag to denote if SoC/IP has only single core R5
*/
struct k3_r5_soc_data {
bool tcm_is_double;
bool tcm_ecc_autoinit;
bool single_cpu_mode;
+ bool is_single_core;
};
/**
@@ -838,7 +842,8 @@ static int k3_r5_rproc_configure(struct k3_r5_rproc *kproc)
core0 = list_first_entry(&cluster->cores, struct k3_r5_core, elem);
if (cluster->mode == CLUSTER_MODE_LOCKSTEP ||
- cluster->mode == CLUSTER_MODE_SINGLECPU) {
+ cluster->mode == CLUSTER_MODE_SINGLECPU ||
+ cluster->mode == CLUSTER_MODE_NONE) {
core = core0;
} else {
core = kproc->core;
@@ -853,7 +858,7 @@ static int k3_r5_rproc_configure(struct k3_r5_rproc *kproc)
boot_vec, cfg, ctrl, stat);
/* check if only Single-CPU mode is supported on applicable SoCs */
- if (cluster->soc_data->single_cpu_mode) {
+ if (cluster->soc_data->single_cpu_mode || cluster->soc_data->is_single_core) {
single_cpu =
!!(stat & PROC_BOOT_STATUS_FLAG_R5_SINGLECORE_ONLY);
if (single_cpu && cluster->mode == CLUSTER_MODE_SPLIT) {
@@ -1074,6 +1079,7 @@ static void k3_r5_adjust_tcm_sizes(struct k3_r5_rproc *kproc)
if (cluster->mode == CLUSTER_MODE_LOCKSTEP ||
cluster->mode == CLUSTER_MODE_SINGLECPU ||
+ cluster->mode == CLUSTER_MODE_NONE ||
!cluster->soc_data->tcm_is_double)
return;
@@ -1147,7 +1153,9 @@ static int k3_r5_rproc_configure_mode(struct k3_r5_rproc *kproc)
atcm_enable = cfg & PROC_BOOT_CFG_FLAG_R5_ATCM_EN ? 1 : 0;
btcm_enable = cfg & PROC_BOOT_CFG_FLAG_R5_BTCM_EN ? 1 : 0;
loczrama = cfg & PROC_BOOT_CFG_FLAG_R5_TCM_RSTBASE ? 1 : 0;
- if (cluster->soc_data->single_cpu_mode) {
+ if (cluster->soc_data->is_single_core) {
+ mode = CLUSTER_MODE_NONE;
+ } else if (cluster->soc_data->single_cpu_mode) {
mode = cfg & PROC_BOOT_CFG_FLAG_R5_SINGLE_CORE ?
CLUSTER_MODE_SINGLECPU : CLUSTER_MODE_SPLIT;
} else {
@@ -1271,6 +1279,7 @@ static int k3_r5_cluster_rproc_init(struct platform_device *pdev)
/* create only one rproc in lockstep mode or single-cpu mode */
if (cluster->mode == CLUSTER_MODE_LOCKSTEP ||
+ cluster->mode == CLUSTER_MODE_NONE ||
cluster->mode == CLUSTER_MODE_SINGLECPU)
break;
}
@@ -1704,21 +1713,32 @@ static int k3_r5_probe(struct platform_device *pdev)
* default to most common efuse configurations - Split-mode on AM64x
* and LockStep-mode on all others
*/
- cluster->mode = data->single_cpu_mode ?
- CLUSTER_MODE_SPLIT : CLUSTER_MODE_LOCKSTEP;
+ if (!data->is_single_core)
+ cluster->mode = data->single_cpu_mode ?
+ CLUSTER_MODE_SPLIT : CLUSTER_MODE_LOCKSTEP;
+ else
+ cluster->mode = CLUSTER_MODE_NONE;
+
cluster->soc_data = data;
INIT_LIST_HEAD(&cluster->cores);
- ret = of_property_read_u32(np, "ti,cluster-mode", &cluster->mode);
- if (ret < 0 && ret != -EINVAL) {
- dev_err(dev, "invalid format for ti,cluster-mode, ret = %d\n",
- ret);
- return ret;
+ if (!data->is_single_core) {
+ ret = of_property_read_u32(np, "ti,cluster-mode", &cluster->mode);
+ if (ret < 0 && ret != -EINVAL) {
+ dev_err(dev, "invalid format for ti,cluster-mode, ret = %d\n", ret);
+ return ret;
+ }
}
num_cores = of_get_available_child_count(np);
- if (num_cores != 2) {
- dev_err(dev, "MCU cluster requires both R5F cores to be enabled, num_cores = %d\n",
+ if (num_cores != 2 && !data->is_single_core) {
+ dev_err(dev, "MCU cluster requires both R5F cores to be enabled but num_cores is set to = %d\n",
+ num_cores);
+ return -ENODEV;
+ }
+
+ if (num_cores != 1 && data->is_single_core) {
+ dev_err(dev, "SoC supports only single core R5 but num_cores is set to %d\n",
num_cores);
return -ENODEV;
}
@@ -1760,18 +1780,28 @@ static const struct k3_r5_soc_data am65_j721e_soc_data = {
.tcm_is_double = false,
.tcm_ecc_autoinit = false,
.single_cpu_mode = false,
+ .is_single_core = false,
};
static const struct k3_r5_soc_data j7200_j721s2_soc_data = {
.tcm_is_double = true,
.tcm_ecc_autoinit = true,
.single_cpu_mode = false,
+ .is_single_core = false,
};
static const struct k3_r5_soc_data am64_soc_data = {
.tcm_is_double = true,
.tcm_ecc_autoinit = true,
.single_cpu_mode = true,
+ .is_single_core = false,
+};
+
+static const struct k3_r5_soc_data am62_soc_data = {
+ .tcm_is_double = false,
+ .tcm_ecc_autoinit = true,
+ .single_cpu_mode = false,
+ .is_single_core = true,
};
static const struct of_device_id k3_r5_of_match[] = {
@@ -1779,6 +1809,7 @@ static const struct of_device_id k3_r5_of_match[] = {
{ .compatible = "ti,j721e-r5fss", .data = &am65_j721e_soc_data, },
{ .compatible = "ti,j7200-r5fss", .data = &j7200_j721s2_soc_data, },
{ .compatible = "ti,am64-r5fss", .data = &am64_soc_data, },
+ { .compatible = "ti,am62-r5fss", .data = &am62_soc_data, },
{ .compatible = "ti,j721s2-r5fss", .data = &j7200_j721s2_soc_data, },
{ /* sentinel */ },
};
--
2.17.1
next prev parent reply other threads:[~2022-11-15 6:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-15 6:09 [PATCH 0/2] Add single core R5F IPC for AM62 SoC family Devarsh Thakkar
2022-11-15 6:09 ` [PATCH 1/2] Documentation: dt-bindings: k3-r5f-rproc: Add new compatible " Devarsh Thakkar
2022-11-28 17:17 ` Mathieu Poirier
2022-11-15 6:09 ` Devarsh Thakkar [this message]
2022-11-28 17:15 ` [PATCH 2/2] remoteproc: k3-r5: Use separate compatible string for TI " Mathieu Poirier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20221115060934.13279-3-devarsht@ti.com \
--to=devarsht@ti.com \
--cc=a-bhatia1@ti.com \
--cc=andersson@kernel.org \
--cc=hnagalla@ti.com \
--cc=j-luthra@ti.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-remoteproc@vger.kernel.org \
--cc=mathieu.poirier@linaro.org \
--cc=nm@ti.com \
--cc=p.zabel@pengutronix.de \
--cc=praneeth@ti.com \
--cc=s-anna@ti.com \
--cc=vigneshr@ti.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).