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Mon, 26 Jan 2026 10:58:30 -0800 (PST) From: Svyatoslav Ryhel To: Peter De Schrijver , Prashant Gaikwad , Michael Turquette , Stephen Boyd , Thierry Reding , Jonathan Hunter , Mikko Perttunen , Svyatoslav Ryhel Cc: linux-clk@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 1/1] clk: tegra: set up proper EMC clock implementation for Tegra114 Date: Mon, 26 Jan 2026 20:58:18 +0200 Message-ID: <20260126185818.78003-2-clamor95@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260126185818.78003-1-clamor95@gmail.com> References: <20260126185818.78003-1-clamor95@gmail.com> Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Remove current emc and emc_mux clocks and replace them with the proper EMC clock implementation for correct EMC driver support. Signed-off-by: Svyatoslav Ryhel Reviewed-by: Mikko Perttunen --- drivers/clk/tegra/clk-tegra114.c | 39 ++++++++++++++++++++------------ 1 file changed, 25 insertions(+), 14 deletions(-) diff --git a/drivers/clk/tegra/clk-tegra114.c b/drivers/clk/tegra/clk-tegra114.c index 8bde72aa5e68..853ef707654a 100644 --- a/drivers/clk/tegra/clk-tegra114.c +++ b/drivers/clk/tegra/clk-tegra114.c @@ -622,10 +622,6 @@ static const char *mux_plld_out0_plld2_out0[] = { }; #define mux_plld_out0_plld2_out0_idx NULL -static const char *mux_pllmcp_clkm[] = { - "pll_m_out0", "pll_c_out0", "pll_p_out0", "clk_m", "pll_m_ud", -}; - static const struct clk_div_table pll_re_div_table[] = { { .val = 0, .div = 1 }, { .val = 1, .div = 2 }, @@ -672,7 +668,6 @@ static struct tegra_clk tegra114_clks[tegra_clk_max] __initdata = { [tegra_clk_csi] = { .dt_id = TEGRA114_CLK_CSI, .present = true }, [tegra_clk_i2c2] = { .dt_id = TEGRA114_CLK_I2C2, .present = true }, [tegra_clk_uartc] = { .dt_id = TEGRA114_CLK_UARTC, .present = true }, - [tegra_clk_emc] = { .dt_id = TEGRA114_CLK_EMC, .present = true }, [tegra_clk_usb2] = { .dt_id = TEGRA114_CLK_USB2, .present = true }, [tegra_clk_usb3] = { .dt_id = TEGRA114_CLK_USB3, .present = true }, [tegra_clk_vde_8] = { .dt_id = TEGRA114_CLK_VDE, .present = true }, @@ -1048,14 +1043,7 @@ static __init void tegra114_periph_clk_init(void __iomem *clk_base, 0, 82, periph_clk_enb_refcnt); clks[TEGRA114_CLK_DSIB] = clk; - /* emc mux */ - clk = clk_register_mux(NULL, "emc_mux", mux_pllmcp_clkm, - ARRAY_SIZE(mux_pllmcp_clkm), - CLK_SET_RATE_NO_REPARENT, - clk_base + CLK_SOURCE_EMC, - 29, 3, 0, &emc_lock); - - clk = tegra_clk_register_mc("mc", "emc_mux", clk_base + CLK_SOURCE_EMC, + clk = tegra_clk_register_mc("mc", "emc", clk_base + CLK_SOURCE_EMC, &emc_lock); clks[TEGRA114_CLK_MC] = clk; @@ -1321,6 +1309,26 @@ static int tegra114_reset_deassert(unsigned long id) return 0; } +static struct clk *tegra114_clk_src_onecell_get(struct of_phandle_args *clkspec, + void *data) +{ + struct clk_hw *hw; + struct clk *clk; + + clk = of_clk_src_onecell_get(clkspec, data); + if (IS_ERR(clk)) + return clk; + + hw = __clk_get_hw(clk); + + if (clkspec->args[0] == TEGRA114_CLK_EMC) { + if (!tegra124_clk_emc_driver_available(hw)) + return ERR_PTR(-EPROBE_DEFER); + } + + return clk; +} + static void __init tegra114_clock_init(struct device_node *np) { struct device_node *node; @@ -1368,7 +1376,10 @@ static void __init tegra114_clock_init(struct device_node *np) tegra_init_special_resets(1, tegra114_reset_assert, tegra114_reset_deassert); - tegra_add_of_provider(np, of_clk_src_onecell_get); + tegra_add_of_provider(np, tegra114_clk_src_onecell_get); + clks[TEGRA114_CLK_EMC] = tegra124_clk_register_emc(clk_base, np, + &emc_lock); + tegra_register_devclks(devclks, ARRAY_SIZE(devclks)); tegra_clk_apply_init_table = tegra114_clock_apply_init_table; -- 2.51.0