From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 98BB5EA7195 for ; Sun, 19 Apr 2026 10:57:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=cIZIKbQ7Pd7y7RJcmWQkxedzciWlUxN3kKs/Q4+MAz0=; b=tpRQftNGa/vq7iLpu2Lq/LQD5G o3Pa8MBGVtQ1eK7x95abpN78VBembA1u6K9FbZfTOlMi12wscXFH8SXN2b1mNKWRbVYAgXnpbzR4p uLRRms+lUno8NsYkMaphfhzLDPb9tLFZIlQSUl6U102Ir6sCs/fTyhnXRLgrt2+TYLriAr+Q4KLBE 9z0uVtKmVjpPn5y5m/fe8RWVRj0Fgm5/iWL7PBJ+imyfP7eBOKddvmfwwCLRskMeLEIv7JlF4Rqxz HbqlDj+tIdnsIkUNiJ8FpALtcK/p1+5B6kL0+FztVszUSTKdLgwwG0gYAAujmiD2rbzDUOma3OkAW aUQz+hyA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wEPpl-00000005ikU-1tSh; Sun, 19 Apr 2026 10:57:02 +0000 Received: from gloria.sntech.de ([185.11.138.130]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wEPpi-00000005ik6-1XjC; Sun, 19 Apr 2026 10:56:59 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sntech.de; s=gloria202408; h=Content-Type:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Reply-To; bh=cIZIKbQ7Pd7y7RJcmWQkxedzciWlUxN3kKs/Q4+MAz0=; b=MHxs90zGbqPvKk41a0Pz2yFw8n M5HpOm9sgLU6c8D+ARSrjAO1tFJNcL1tJZuox9rkk25ktrMkCx27cNjp1ISV3QXG+NKnyft09219U YWi76jKMZzD+eBYXZ5NzIkSaaIUPqIrmyoEKKQDihWKWoAQLFyJsoWh8P+eIBVX44JWHD0ThK+kkh kSzFhitwem0vjviDtBtDLtSJtsSEXK9Q9xLqBDXErYtJysAGFi3THtq96JOwe4tm3hKBUh81aHBpi aRIRpIZABE/stPGgWt5T0/8iwTyMskTPeKUCthG1VMB8cVjRtrs8o3fgY9migxrF4wtH27H0Zdwph wRPRLHJQ==; From: Heiko Stuebner To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Daniele Briguglio Cc: Nicolas Frattaroli , linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Daniele Briguglio , Ricardo Pardini Subject: Re: [PATCH v3 4/4] clk: rockchip: rk3588: add GATE_GRF clocks for I2S MCLK output to IO Date: Sun, 19 Apr 2026 12:56:50 +0200 Message-ID: <3399175.N7aMVyhfb1@phil> In-Reply-To: <20260320-rk3588-mclk-gate-grf-v3-4-980338eacd2c@superkali.me> References: <20260320-rk3588-mclk-gate-grf-v3-0-980338eacd2c@superkali.me> <20260320-rk3588-mclk-gate-grf-v3-4-980338eacd2c@superkali.me> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260419_035658_411799_2D292C98 X-CRM114-Status: GOOD ( 23.79 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Daniele, Am Freitag, 20. M=C3=A4rz 2026, 11:34:16 Mitteleurop=C3=A4ische Sommerzeit = schrieb Daniele Briguglio: > The I2S MCLK outputs on RK3588 are gated by bits in the SYS_GRF > register SOC_CON6 (offset 0x318). These gates control whether the > internal CRU MCLK signals reach the external IO pins connected to > audio codecs. >=20 > The kernel should explicitly manage these gates so that audio > functionality does not depend on bootloader register state. This is > analogous to what was done for RK3576 SAI MCLK outputs [1]. >=20 > Register the SYS_GRF as an auxiliary GRF with grf_type_sys in the > early clock init, and add GATE_GRF entries for all four I2S MCLK > output gates: >=20 > - I2S0_8CH_MCLKOUT_TO_IO (bit 0) > - I2S1_8CH_MCLKOUT_TO_IO (bit 1) > - I2S2_2CH_MCLKOUT_TO_IO (bit 2) > - I2S3_2CH_MCLKOUT_TO_IO (bit 7) >=20 > Board DTS files that need MCLK on an IO pin can reference these > clocks, e.g.: >=20 > clocks =3D <&cru I2S0_8CH_MCLKOUT_TO_IO>; >=20 > Tested on the Youyeetoo YY3588 (RK3588) with an ES8388 codec on I2S0. >=20 > [1] https://lore.kernel.org/r/20250305-rk3576-sai-v1-2-64e6cf863e9a@colla= bora.com/ >=20 > Reviewed-by: Nicolas Frattaroli > Tested-by: Ricardo Pardini > Signed-off-by: Daniele Briguglio > --- > drivers/clk/rockchip/clk-rk3588.c | 24 ++++++++++++++++++++++++ > 1 file changed, 24 insertions(+) >=20 > diff --git a/drivers/clk/rockchip/clk-rk3588.c b/drivers/clk/rockchip/clk= =2Drk3588.c > index 1694223f4f84..2cc85fb5b2cc 100644 > --- a/drivers/clk/rockchip/clk-rk3588.c > +++ b/drivers/clk/rockchip/clk-rk3588.c > @@ -5,11 +5,14 @@ > */ > =20 > #include > +#include > #include > +#include > #include > #include > #include > #include > +#include > #include "clk.h" > =20 > #define RK3588_GRF_SOC_STATUS0 0x600 > @@ -892,6 +895,8 @@ static struct rockchip_clk_branch rk3588_early_clk_br= anches[] __initdata =3D { > RK3588_CLKGATE_CON(8), 0, GFLAGS), > MUX(I2S2_2CH_MCLKOUT, "i2s2_2ch_mclkout", i2s2_2ch_mclkout_p, CLK_SET_R= ATE_PARENT, > RK3588_CLKSEL_CON(30), 2, 1, MFLAGS), > + GATE_GRF(I2S2_2CH_MCLKOUT_TO_IO, "i2s2_2ch_mclkout_to_io", "i2s2_2ch_mc= lkout", > + 0, RK3588_SYSGRF_SOC_CON6, 2, GFLAGS, grf_type_sys), > =20 > COMPOSITE(CLK_I2S3_2CH_SRC, "clk_i2s3_2ch_src", gpll_aupll_p, 0, > RK3588_CLKSEL_CON(30), 8, 1, MFLAGS, 3, 5, DFLAGS, > @@ -907,6 +912,8 @@ static struct rockchip_clk_branch rk3588_early_clk_br= anches[] __initdata =3D { > RK3588_CLKGATE_CON(8), 4, GFLAGS), > MUX(I2S3_2CH_MCLKOUT, "i2s3_2ch_mclkout", i2s3_2ch_mclkout_p, CLK_SET_R= ATE_PARENT, > RK3588_CLKSEL_CON(32), 2, 1, MFLAGS), > + GATE_GRF(I2S3_2CH_MCLKOUT_TO_IO, "i2s3_2ch_mclkout_to_io", "i2s3_2ch_mc= lkout", > + 0, RK3588_SYSGRF_SOC_CON6, 7, GFLAGS, grf_type_sys), > GATE(PCLK_ACDCDIG, "pclk_acdcdig", "pclk_audio_root", 0, > RK3588_CLKGATE_CON(7), 11, GFLAGS), > GATE(HCLK_I2S0_8CH, "hclk_i2s0_8ch", "hclk_audio_root", 0, > @@ -935,6 +942,8 @@ static struct rockchip_clk_branch rk3588_early_clk_br= anches[] __initdata =3D { > RK3588_CLKGATE_CON(7), 10, GFLAGS), > MUX(I2S0_8CH_MCLKOUT, "i2s0_8ch_mclkout", i2s0_8ch_mclkout_p, CLK_SET_R= ATE_PARENT, > RK3588_CLKSEL_CON(28), 2, 2, MFLAGS), > + GATE_GRF(I2S0_8CH_MCLKOUT_TO_IO, "i2s0_8ch_mclkout_to_io", "i2s0_8ch_mc= lkout", > + 0, RK3588_SYSGRF_SOC_CON6, 0, GFLAGS, grf_type_sys), > =20 > GATE(HCLK_PDM1, "hclk_pdm1", "hclk_audio_root", 0, > RK3588_CLKGATE_CON(9), 6, GFLAGS), > @@ -2220,6 +2229,8 @@ static struct rockchip_clk_branch rk3588_early_clk_= branches[] __initdata =3D { > RK3588_PMU_CLKGATE_CON(2), 13, GFLAGS), > MUX(I2S1_8CH_MCLKOUT, "i2s1_8ch_mclkout", i2s1_8ch_mclkout_p, CLK_SET_R= ATE_PARENT, > RK3588_PMU_CLKSEL_CON(9), 2, 2, MFLAGS), > + GATE_GRF(I2S1_8CH_MCLKOUT_TO_IO, "i2s1_8ch_mclkout_to_io", "i2s1_8ch_mc= lkout", > + 0, RK3588_SYSGRF_SOC_CON6, 1, GFLAGS, grf_type_sys), > GATE(PCLK_PMU1, "pclk_pmu1", "pclk_pmu0_root", CLK_IS_CRITICAL, > RK3588_PMU_CLKGATE_CON(1), 0, GFLAGS), > GATE(CLK_DDR_FAIL_SAFE, "clk_ddr_fail_safe", "clk_pmu0", CLK_IGNORE_UNU= SED, > @@ -2439,6 +2450,8 @@ static struct rockchip_clk_branch rk3588_clk_branch= es[] =3D { > static void __init rk3588_clk_early_init(struct device_node *np) > { > struct rockchip_clk_provider *ctx; > + struct rockchip_aux_grf *sys_grf_e; > + struct regmap *sys_grf; > unsigned long clk_nr_clks, max_clk_id1, max_clk_id2; > void __iomem *reg_base; > =20 > @@ -2479,6 +2492,17 @@ static void __init rk3588_clk_early_init(struct de= vice_node *np) > &rk3588_cpub1clk_data, rk3588_cpub1clk_rates, > ARRAY_SIZE(rk3588_cpub1clk_rates)); > =20 > + /* Register SYS_GRF for I2S MCLK output to IO gate clocks */ > + sys_grf =3D syscon_regmap_lookup_by_compatible("rockchip,rk3588-sys-grf= "); > + if (!IS_ERR(sys_grf)) { > + sys_grf_e =3D kzalloc_obj(*sys_grf_e); > + if (sys_grf_e) { > + sys_grf_e->grf =3D sys_grf; > + sys_grf_e->type =3D grf_type_sys; > + hash_add(ctx->aux_grf_table, &sys_grf_e->node, grf_type_sys); > + } > + } > + sorry, took me a bit to articulate, what "issue" I have with this, which is only that it open-codes adding GRFs. I.e. over time this likely won't be the only place this might happen, so I envision a more central function in the rockchip clock code, aka something like: (1) rockchip_clk_add_grf(struct rockchip_clk_provider *ctx, struct regmap *grf, enum rockchip_grf_type type) I'm still unsure, if we want the sycon lookup also in there, like: (2) rockchip_clk_add_grf(struct rockchip_clk_provider *ctx, const char *compat, enum rockchip_grf_type type) but then we would end up having to also define if it's optional, so I guess variant (1) is the nicer one, as it at least abstracts away all the struct rockchip_aux_grf handling from the clock driver itself. Heiko > rockchip_clk_register_branches(ctx, rk3588_early_clk_branches, > ARRAY_SIZE(rk3588_early_clk_branches)); > =20 >=20 >=20 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9889FEA7194 for ; Sun, 19 Apr 2026 10:57:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: 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References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Reply-To; bh=cIZIKbQ7Pd7y7RJcmWQkxedzciWlUxN3kKs/Q4+MAz0=; b=MHxs90zGbqPvKk41a0Pz2yFw8n M5HpOm9sgLU6c8D+ARSrjAO1tFJNcL1tJZuox9rkk25ktrMkCx27cNjp1ISV3QXG+NKnyft09219U YWi76jKMZzD+eBYXZ5NzIkSaaIUPqIrmyoEKKQDihWKWoAQLFyJsoWh8P+eIBVX44JWHD0ThK+kkh kSzFhitwem0vjviDtBtDLtSJtsSEXK9Q9xLqBDXErYtJysAGFi3THtq96JOwe4tm3hKBUh81aHBpi aRIRpIZABE/stPGgWt5T0/8iwTyMskTPeKUCthG1VMB8cVjRtrs8o3fgY9migxrF4wtH27H0Zdwph wRPRLHJQ==; From: Heiko Stuebner To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Daniele Briguglio Cc: Nicolas Frattaroli , linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Daniele Briguglio , Ricardo Pardini Subject: Re: [PATCH v3 4/4] clk: rockchip: rk3588: add GATE_GRF clocks for I2S MCLK output to IO Date: Sun, 19 Apr 2026 12:56:50 +0200 Message-ID: <3399175.N7aMVyhfb1@phil> In-Reply-To: <20260320-rk3588-mclk-gate-grf-v3-4-980338eacd2c@superkali.me> References: <20260320-rk3588-mclk-gate-grf-v3-0-980338eacd2c@superkali.me> <20260320-rk3588-mclk-gate-grf-v3-4-980338eacd2c@superkali.me> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260419_035658_411799_2D292C98 X-CRM114-Status: GOOD ( 23.79 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org SGkgRGFuaWVsZSwKCkFtIEZyZWl0YWcsIDIwLiBNw6RyeiAyMDI2LCAxMTozNDoxNiBNaXR0ZWxl dXJvcMOkaXNjaGUgU29tbWVyemVpdCBzY2hyaWViIERhbmllbGUgQnJpZ3VnbGlvOgo+IFRoZSBJ 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