From: Olivia Wen <olivia.wen@mediatek.com>
To: Bjorn Andersson <andersson@kernel.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Rob Herring <robh@kernel.org>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Tinghan Shen <tinghan.shen@mediatek.com>,
<linux-remoteproc@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<Project_Global_Chrome_Upstream_Group@mediatek.com>,
<jason-ch.chen@mediatek.com>, <yaya.chang@mediatek.com>,
<teddy.chen@mediatek.com>, <olivia.wen@mediatek.com>
Subject: [PATCH v3 2/4] remoteproc: mediatek: Support MT8188 SCP core 1
Date: Wed, 24 Apr 2024 11:03:49 +0800 [thread overview]
Message-ID: <20240424030351.5294-3-olivia.wen@mediatek.com> (raw)
In-Reply-To: <20240424030351.5294-1-olivia.wen@mediatek.com>
MT8188 SCP has two RISC-V cores which is similar to MT8195 but without
L1TCM. We've added MT8188-specific functions to configure L1TCM in
multicore setups.
Signed-off-by: Olivia Wen <olivia.wen@mediatek.com>
---
drivers/remoteproc/mtk_scp.c | 146 ++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 143 insertions(+), 3 deletions(-)
diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 6751829..6295148 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -471,6 +471,86 @@ static int mt8186_scp_before_load(struct mtk_scp *scp)
return 0;
}
+static int mt8188_scp_l2tcm_on(struct mtk_scp *scp)
+{
+ struct mtk_scp_of_cluster *scp_cluster = scp->cluster;
+
+ mutex_lock(&scp_cluster->cluster_lock);
+
+ if (scp_cluster->l2tcm_refcnt == 0) {
+ /* clear SPM interrupt, SCP2SPM_IPC_CLR */
+ writel(0xff, scp->cluster->reg_base + MT8192_SCP2SPM_IPC_CLR);
+
+ /* Power on L2TCM */
+ scp_sram_power_on(scp->cluster->reg_base + MT8192_L2TCM_SRAM_PD_0, 0);
+ scp_sram_power_on(scp->cluster->reg_base + MT8192_L2TCM_SRAM_PD_1, 0);
+ scp_sram_power_on(scp->cluster->reg_base + MT8192_L2TCM_SRAM_PD_2, 0);
+ scp_sram_power_on(scp->cluster->reg_base + MT8192_L1TCM_SRAM_PDN, 0);
+ }
+
+ scp_cluster->l2tcm_refcnt += 1;
+
+ mutex_unlock(&scp_cluster->cluster_lock);
+
+ return 0;
+}
+
+static int mt8188_scp_before_load(struct mtk_scp *scp)
+{
+ writel(1, scp->cluster->reg_base + MT8192_CORE0_SW_RSTN_SET);
+
+ mt8188_scp_l2tcm_on(scp);
+
+ scp_sram_power_on(scp->cluster->reg_base + MT8192_CPU0_SRAM_PD, 0);
+
+ /* enable MPU for all memory regions */
+ writel(0xff, scp->cluster->reg_base + MT8192_CORE0_MEM_ATT_PREDEF);
+
+ return 0;
+}
+
+static int mt8188_scp_c1_before_load(struct mtk_scp *scp)
+{
+ u32 sec_ctrl;
+ struct mtk_scp *scp_c0;
+ struct mtk_scp_of_cluster *scp_cluster = scp->cluster;
+
+ scp->data->scp_reset_assert(scp);
+
+ mt8188_scp_l2tcm_on(scp);
+
+ scp_sram_power_on(scp->cluster->reg_base + MT8195_CPU1_SRAM_PD, 0);
+
+ /* enable MPU for all memory regions */
+ writel(0xff, scp->cluster->reg_base + MT8195_CORE1_MEM_ATT_PREDEF);
+
+ /*
+ * The L2TCM_OFFSET_RANGE and L2TCM_OFFSET shift the destination address
+ * on SRAM when SCP core 1 accesses SRAM.
+ *
+ * This configuration solves booting the SCP core 0 and core 1 from
+ * different SRAM address because core 0 and core 1 both boot from
+ * the head of SRAM by default. this must be configured before boot SCP core 1.
+ *
+ * The value of L2TCM_OFFSET_RANGE is from the viewpoint of SCP core 1.
+ * When SCP core 1 issues address within the range (L2TCM_OFFSET_RANGE),
+ * the address will be added with a fixed offset (L2TCM_OFFSET) on the bus.
+ * The shift action is tranparent to software.
+ */
+ writel(0, scp->cluster->reg_base + MT8195_L2TCM_OFFSET_RANGE_0_LOW);
+ writel(scp->sram_size, scp->cluster->reg_base + MT8195_L2TCM_OFFSET_RANGE_0_HIGH);
+
+ scp_c0 = list_first_entry(&scp_cluster->mtk_scp_list, struct mtk_scp, elem);
+ writel(scp->sram_phys - scp_c0->sram_phys, scp->cluster->reg_base + MT8195_L2TCM_OFFSET);
+
+ /* enable SRAM offset when fetching instruction and data */
+ sec_ctrl = readl(scp->cluster->reg_base + MT8195_SEC_CTRL);
+ sec_ctrl |= MT8195_CORE_OFFSET_ENABLE_I | MT8195_CORE_OFFSET_ENABLE_D;
+ writel(sec_ctrl, scp->cluster->reg_base + MT8195_SEC_CTRL);
+
+ return 0;
+}
+
static int mt8192_scp_before_load(struct mtk_scp *scp)
{
/* clear SPM interrupt, SCP2SPM_IPC_CLR */
@@ -717,6 +797,47 @@ static void mt8183_scp_stop(struct mtk_scp *scp)
writel(0, scp->cluster->reg_base + MT8183_WDT_CFG);
}
+static void mt8188_scp_l2tcm_off(struct mtk_scp *scp)
+{
+ struct mtk_scp_of_cluster *scp_cluster = scp->cluster;
+
+ mutex_lock(&scp_cluster->cluster_lock);
+
+ if (scp_cluster->l2tcm_refcnt > 0)
+ scp_cluster->l2tcm_refcnt -= 1;
+
+ if (scp_cluster->l2tcm_refcnt == 0) {
+ /* Power off L2TCM */
+ scp_sram_power_off(scp->cluster->reg_base + MT8192_L2TCM_SRAM_PD_0, 0);
+ scp_sram_power_off(scp->cluster->reg_base + MT8192_L2TCM_SRAM_PD_1, 0);
+ scp_sram_power_off(scp->cluster->reg_base + MT8192_L2TCM_SRAM_PD_2, 0);
+ scp_sram_power_off(scp->cluster->reg_base + MT8192_L1TCM_SRAM_PDN, 0);
+ }
+
+ mutex_unlock(&scp_cluster->cluster_lock);
+}
+
+static void mt8188_scp_stop(struct mtk_scp *scp)
+{
+ mt8188_scp_l2tcm_off(scp);
+
+ scp_sram_power_off(scp->cluster->reg_base + MT8192_CPU0_SRAM_PD, 0);
+
+ /* Disable SCP watchdog */
+ writel(0, scp->cluster->reg_base + MT8192_CORE0_WDT_CFG);
+}
+
+static void mt8188_scp_c1_stop(struct mtk_scp *scp)
+{
+ mt8188_scp_l2tcm_off(scp);
+
+ /* Power off CPU SRAM */
+ scp_sram_power_off(scp->cluster->reg_base + MT8195_CPU1_SRAM_PD, 0);
+
+ /* Disable SCP watchdog */
+ writel(0, scp->cluster->reg_base + MT8195_CORE1_WDT_CFG);
+}
+
static void mt8192_scp_stop(struct mtk_scp *scp)
{
/* Disable SRAM clock */
@@ -1264,16 +1385,28 @@ static const struct mtk_scp_of_data mt8186_of_data = {
static const struct mtk_scp_of_data mt8188_of_data = {
.scp_clk_get = mt8195_scp_clk_get,
- .scp_before_load = mt8192_scp_before_load,
- .scp_irq_handler = mt8192_scp_irq_handler,
+ .scp_before_load = mt8188_scp_before_load,
+ .scp_irq_handler = mt8195_scp_irq_handler,
.scp_reset_assert = mt8192_scp_reset_assert,
.scp_reset_deassert = mt8192_scp_reset_deassert,
- .scp_stop = mt8192_scp_stop,
+ .scp_stop = mt8188_scp_stop,
.scp_da_to_va = mt8192_scp_da_to_va,
.host_to_scp_reg = MT8192_GIPC_IN_SET,
.host_to_scp_int_bit = MT8192_HOST_IPC_INT_BIT,
};
+static const struct mtk_scp_of_data mt8188_of_data_c1 = {
+ .scp_clk_get = mt8195_scp_clk_get,
+ .scp_before_load = mt8188_scp_c1_before_load,
+ .scp_irq_handler = mt8195_scp_c1_irq_handler,
+ .scp_reset_assert = mt8195_scp_c1_reset_assert,
+ .scp_reset_deassert = mt8195_scp_c1_reset_deassert,
+ .scp_stop = mt8188_scp_c1_stop,
+ .scp_da_to_va = mt8192_scp_da_to_va,
+ .host_to_scp_reg = MT8192_GIPC_IN_SET,
+ .host_to_scp_int_bit = MT8195_CORE1_HOST_IPC_INT_BIT,
+};
+
static const struct mtk_scp_of_data mt8192_of_data = {
.scp_clk_get = mt8192_scp_clk_get,
.scp_before_load = mt8192_scp_before_load,
@@ -1310,6 +1443,12 @@ static const struct mtk_scp_of_data mt8195_of_data_c1 = {
.host_to_scp_int_bit = MT8195_CORE1_HOST_IPC_INT_BIT,
};
+static const struct mtk_scp_of_data *mt8188_of_data_cores[] = {
+ &mt8188_of_data,
+ &mt8188_of_data_c1,
+ NULL
+};
+
static const struct mtk_scp_of_data *mt8195_of_data_cores[] = {
&mt8195_of_data,
&mt8195_of_data_c1,
@@ -1320,6 +1459,7 @@ static const struct of_device_id mtk_scp_of_match[] = {
{ .compatible = "mediatek,mt8183-scp", .data = &mt8183_of_data },
{ .compatible = "mediatek,mt8186-scp", .data = &mt8186_of_data },
{ .compatible = "mediatek,mt8188-scp", .data = &mt8188_of_data },
+ { .compatible = "mediatek,mt8188-scp-dual", .data = &mt8188_of_data_cores },
{ .compatible = "mediatek,mt8192-scp", .data = &mt8192_of_data },
{ .compatible = "mediatek,mt8195-scp", .data = &mt8195_of_data },
{ .compatible = "mediatek,mt8195-scp-dual", .data = &mt8195_of_data_cores },
--
2.6.4
next prev parent reply other threads:[~2024-04-24 3:04 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-24 3:03 [PATCH v3 0/4] Support MT8188 SCP core 1 Olivia Wen
2024-04-24 3:03 ` [PATCH v3 1/4] dt-bindings: remoteproc: mediatek: Support MT8188 dual-core SCP Olivia Wen
2024-04-24 3:03 ` Olivia Wen [this message]
2024-04-24 10:00 ` [PATCH v3 2/4] remoteproc: mediatek: Support MT8188 SCP core 1 AngeloGioacchino Del Regno
2024-04-24 3:03 ` [PATCH v3 3/4] remoteproc: mediatek: Support setting DRAM and IPI shared buffer sizes Olivia Wen
2024-04-24 10:00 ` AngeloGioacchino Del Regno
2024-04-24 3:03 ` [PATCH v3 4/4] media: mediatek: imgsys: Support image processing Olivia Wen
2024-04-24 10:02 ` AngeloGioacchino Del Regno
2024-04-24 10:04 ` AngeloGioacchino Del Regno
2024-04-24 15:52 ` 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=20240424030351.5294-3-olivia.wen@mediatek.com \
--to=olivia.wen@mediatek.com \
--cc=Project_Global_Chrome_Upstream_Group@mediatek.com \
--cc=andersson@kernel.org \
--cc=angelogioacchino.delregno@collabora.com \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=jason-ch.chen@mediatek.com \
--cc=krzk+dt@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=linux-remoteproc@vger.kernel.org \
--cc=mathieu.poirier@linaro.org \
--cc=matthias.bgg@gmail.com \
--cc=robh@kernel.org \
--cc=teddy.chen@mediatek.com \
--cc=tinghan.shen@mediatek.com \
--cc=yaya.chang@mediatek.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 read-only IMAP folder(s) and NNTP newsgroup(s).