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And some MUs has internal RAMs for SCMI shared buffer usage. Signed-off-by: Peng Fan --- .../devicetree/bindings/mailbox/fsl,mu.yaml | 50 ++++++++++++++++++= +++- 1 file changed, 48 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml b/Docume= ntation/devicetree/bindings/mailbox/fsl,mu.yaml index 12e7a7d536a3..d10c6fed291b 100644 --- a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml +++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml @@ -29,10 +29,14 @@ properties: - const: fsl,imx8ulp-mu - const: fsl,imx8-mu-scu - const: fsl,imx8-mu-seco - - const: fsl,imx93-mu-s4 - const: fsl,imx8ulp-mu-s4 + - const: fsl,imx93-mu-s4 + - const: fsl,imx95-mu-ele + - const: fsl,imx95-mu-v2x - items: - - const: fsl,imx93-mu + - enum: + - fsl,imx93-mu + - fsl,imx95-mu - const: fsl,imx8ulp-mu - items: - enum: @@ -95,6 +99,17 @@ properties: power-domains: maxItems: 1 =20 + ranges: true + + "#address-cells": true + + "#size-cells": true + +patternProperties: + "^sram@[a-z0-9]+": + $ref: /schemas/sram/sram.yaml# + unevaluatedProperties: false + required: - compatible - reg @@ -134,3 +149,34 @@ examples: interrupts =3D ; #mbox-cells =3D <2>; }; + + - | + #include + + mu2: mailbox@445b0000 { + #address-cells =3D <1>; + #size-cells =3D <1>; + compatible =3D "fsl,imx95-mu", "fsl,imx8ulp-mu"; + reg =3D <0x445b0000 0x10000>; + interrupts =3D ; + ranges; + #mbox-cells =3D <2>; + + sram@445b1000 { + compatible =3D "mmio-sram"; + reg =3D <0x445b1000 0x400>; + #address-cells =3D <1>; + #size-cells =3D <1>; + ranges =3D <0x0 0x445b1000 0x400>; + + scmi_buf0: scmi-sram-section@0 { + compatible =3D "arm,scmi-shmem"; + reg =3D <0x0 0x80>; + }; + + scmi_buf1: scmi-sram-section@80 { + compatible =3D "arm,scmi-shmem"; + reg =3D <0x80 0x80>; + }; + }; + }; --=20 2.37.1 From nobody Thu Dec 25 05:07:12 2025 Received: from EUR03-DBA-obe.outbound.protection.outlook.com (mail-dbaeur03on2048.outbound.protection.outlook.com [40.107.104.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D5A7363A7; Mon, 22 Jan 2024 06:15:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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The patch only adds support the specific MU, such as ELE MU. For generic MU, not add support for number larger than 4. Signed-off-by: Peng Fan --- drivers/mailbox/imx-mailbox.c | 46 ++++++++++++++++++++++++++++++++-------= ---- 1 file changed, 35 insertions(+), 11 deletions(-) diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 656171362fe9..f2a21baded29 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -29,7 +29,9 @@ #define IMX_MU_S4_CHANS 2 #define IMX_MU_CHAN_NAME_SIZE 20 =20 -#define IMX_MU_NUM_RR 4 +#define IMX_MU_V2_PAR_OFF 0x4 +#define IMX_MU_V2_TR_MASK GENMASK(7, 0) +#define IMX_MU_V2_RR_MASK GENMASK(15, 8) =20 #define IMX_MU_SECO_TX_TOUT (msecs_to_jiffies(3000)) #define IMX_MU_SECO_RX_TOUT (msecs_to_jiffies(3000)) @@ -93,10 +95,11 @@ struct imx_mu_priv { struct clk *clk; int irq[IMX_MU_CHANS]; bool suspend; - - u32 xcr[IMX_MU_xCR_MAX]; - bool side_b; + + u32 xcr[IMX_MU_xCR_MAX]; + u32 num_tr; + u32 num_rr; }; =20 enum imx_mu_type { @@ -264,18 +267,17 @@ static int imx_mu_generic_rxdb(struct imx_mu_priv *pr= iv, static int imx_mu_specific_tx(struct imx_mu_priv *priv, struct imx_mu_con_= priv *cp, void *data) { u32 *arg =3D data; + u32 num_tr =3D priv->num_tr; int i, ret; u32 xsr; - u32 size, max_size, num_tr; + u32 size, max_size; =20 if (priv->dcfg->type & IMX_MU_V2_S4) { size =3D ((struct imx_s4_rpc_msg_max *)data)->hdr.size; max_size =3D sizeof(struct imx_s4_rpc_msg_max); - num_tr =3D 8; } else { size =3D ((struct imx_sc_rpc_msg_max *)data)->hdr.size; max_size =3D sizeof(struct imx_sc_rpc_msg_max); - num_tr =3D 4; } =20 switch (cp->type) { @@ -324,6 +326,7 @@ static int imx_mu_specific_rx(struct imx_mu_priv *priv,= struct imx_mu_con_priv * int i, ret; u32 xsr; u32 size, max_size; + u32 num_rr =3D priv->num_rr; =20 data =3D (u32 *)priv->msg; =20 @@ -345,13 +348,13 @@ static int imx_mu_specific_rx(struct imx_mu_priv *pri= v, struct imx_mu_con_priv * =20 for (i =3D 1; i < size; i++) { ret =3D readl_poll_timeout(priv->base + priv->dcfg->xSR[IMX_MU_RSR], xsr, - xsr & IMX_MU_xSR_RFn(priv->dcfg->type, i % 4), 0, + xsr & IMX_MU_xSR_RFn(priv->dcfg->type, i % num_rr), 0, 5 * USEC_PER_SEC); if (ret) { dev_err(priv->dev, "timeout read idx %d\n", i); return ret; } - *data++ =3D imx_mu_read(priv, priv->dcfg->xRR + (i % 4) * 4); + *data++ =3D imx_mu_read(priv, priv->dcfg->xRR + (i % num_rr) * 4); } =20 imx_mu_xcr_rmw(priv, IMX_MU_RCR, IMX_MU_xCR_RIEn(priv->dcfg->type, 0), 0); @@ -737,11 +740,30 @@ static struct mbox_chan *imx_mu_seco_xlate(struct mbo= x_controller *mbox, return imx_mu_xlate(mbox, sp); } =20 +static void imx_mu_get_tr_rr(struct imx_mu_priv *priv) +{ + u32 val; + + if (priv->dcfg->type & IMX_MU_V2) { + val =3D imx_mu_read(priv, IMX_MU_V2_PAR_OFF); + priv->num_tr =3D FIELD_GET(IMX_MU_V2_TR_MASK, val); + priv->num_rr =3D FIELD_GET(IMX_MU_V2_RR_MASK, val); + } else { + priv->num_tr =3D 4; + priv->num_rr =3D 4; + } +} + static void imx_mu_init_generic(struct imx_mu_priv *priv) { unsigned int i; unsigned int val; =20 + if (priv->num_rr > 4 || priv->num_tr > 4) { + WARN_ONCE(true, "%s not support TR/RR larger than 4\n", __func__); + return; + } + for (i =3D 0; i < IMX_MU_CHANS; i++) { struct imx_mu_con_priv *cp =3D &priv->con_priv[i]; =20 @@ -768,8 +790,8 @@ static void imx_mu_init_generic(struct imx_mu_priv *pri= v) imx_mu_write(priv, val, priv->dcfg->xSR[IMX_MU_GSR]); =20 /* Clear any pending RSR */ - for (i =3D 0; i < IMX_MU_NUM_RR; i++) - imx_mu_read(priv, priv->dcfg->xRR + (i % 4) * 4); + for (i =3D 0; i < priv->num_rr; i++) + imx_mu_read(priv, priv->dcfg->xRR + i * 4); } =20 static void imx_mu_init_specific(struct imx_mu_priv *priv) @@ -864,6 +886,8 @@ static int imx_mu_probe(struct platform_device *pdev) return ret; } =20 + imx_mu_get_tr_rr(priv); + priv->side_b =3D of_property_read_bool(np, "fsl,mu-side-b"); =20 priv->dcfg->init(priv); --=20 2.37.1 From nobody Thu Dec 25 05:07:12 2025 Received: from EUR03-DBA-obe.outbound.protection.outlook.com (mail-dbaeur03on2083.outbound.protection.outlook.com [40.107.104.83]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 44CDFFBE7; Mon, 22 Jan 2024 06:15:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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Since the driver already supports get TR/RR from Parameter registers, not hardcoding the number, this patch just add the compatible entry to reuse i.MX8ULP S4 cfg data. To use the internal SRAM, need populate its sub-nodes. Signed-off-by: Peng Fan --- drivers/mailbox/imx-mailbox.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index f2a21baded29..8506f92c0238 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -907,6 +908,8 @@ static int imx_mu_probe(struct platform_device *pdev) return ret; } =20 + of_platform_populate(dev->of_node, NULL, NULL, dev); + pm_runtime_enable(dev); =20 ret =3D pm_runtime_resume_and_get(dev); @@ -1018,6 +1021,8 @@ static const struct of_device_id imx_mu_dt_ids[] =3D { { .compatible =3D "fsl,imx8ulp-mu", .data =3D &imx_mu_cfg_imx8ulp }, { .compatible =3D "fsl,imx8ulp-mu-s4", .data =3D &imx_mu_cfg_imx8ulp_s4 }, { .compatible =3D "fsl,imx93-mu-s4", .data =3D &imx_mu_cfg_imx93_s4 }, + { .compatible =3D "fsl,imx95-mu-ele", .data =3D &imx_mu_cfg_imx8ulp_s4 }, + { .compatible =3D "fsl,imx95-mu-v2x", .data =3D &imx_mu_cfg_imx8ulp_s4 }, { .compatible =3D "fsl,imx8-mu-scu", .data =3D &imx_mu_cfg_imx8_scu }, { .compatible =3D "fsl,imx8-mu-seco", .data =3D &imx_mu_cfg_imx8_seco }, { }, --=20 2.37.1