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Date: Mon, 5 Sep 2022 12:04:13 +0200 From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com> To: matthias.bgg@...il.com Cc: mturquette@...libre.com, sboyd@...nel.org, angelogioacchino.delregno@...labora.com, wenst@...omium.org, miles.chen@...iatek.com, rex-bc.chen@...iatek.com, nfraprado@...labora.com, chun-jie.chen@...iatek.com, jose.exposito89@...il.com, drinkcat@...omium.org, weiyi.lu@...iatek.com, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org Subject: [PATCH 07/10] clk: mediatek: clk-mt8195-topckgen: Add GPU clock mux notifier Following the changes done to MT8183, register a similar notifier for MT8195 as well, allowing safe clockrate updates for the MFGPLL. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com> --- drivers/clk/mediatek/clk-mt8195-topckgen.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/clk/mediatek/clk-mt8195-topckgen.c b/drivers/clk/mediatek/clk-mt8195-topckgen.c index e1c3ab4e146b..4dde23bece66 100644 --- a/drivers/clk/mediatek/clk-mt8195-topckgen.c +++ b/drivers/clk/mediatek/clk-mt8195-topckgen.c @@ -1217,6 +1217,21 @@ static const struct of_device_id of_match_clk_mt8195_topck[] = { {} }; +/* Register mux notifier for MFG mux */ +static int clk_mt8195_reg_mfg_mux_notifier(struct device *dev, struct clk *clk) +{ + struct mtk_mux_nb *mfg_mux_nb; + + mfg_mux_nb = devm_kzalloc(dev, sizeof(*mfg_mux_nb), GFP_KERNEL); + if (!mfg_mux_nb) + return -ENOMEM; + + mfg_mux_nb->ops = &clk_mux_ops; + mfg_mux_nb->bypass_index = 0; /* Bypass to TOP_MFG_CORE_TMP */ + + return devm_mtk_clk_mux_notifier_register(dev, clk, mfg_mux_nb); +} + static int clk_mt8195_topck_probe(struct platform_device *pdev) { struct clk_hw_onecell_data *top_clk_data; @@ -1256,6 +1271,11 @@ static int clk_mt8195_topck_probe(struct platform_device *pdev) goto unregister_muxes; top_clk_data->hws[CLK_TOP_MFG_CK_FAST_REF] = hw; + r = clk_mt8195_reg_mfg_mux_notifier(&pdev->dev, + top_clk_data->hws[CLK_TOP_MFG_CK_FAST_REF]->clk); + if (r) + goto unregister_muxes; + r = mtk_clk_register_composites(top_adj_divs, ARRAY_SIZE(top_adj_divs), base, &mt8195_clk_lock, top_clk_data); if (r) -- 2.37.2
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