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[78.88.45.141]) by smtp.gmail.com with ESMTPSA id mj8-20020a170906af8800b00a3ee9305b02sm4091226ejb.20.2024.02.23.13.21.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Feb 2024 13:21:50 -0800 (PST) From: Konrad Dybcio Date: Fri, 23 Feb 2024 22:21:38 +0100 Subject: [PATCH v2 2/7] clk: qcom: clk-alpha-pll: Add HUAYRA_2290 support Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240219-topic-rb1_gpu-v2-2-2d3d6a0db040@linaro.org> References: <20240219-topic-rb1_gpu-v2-0-2d3d6a0db040@linaro.org> In-Reply-To: <20240219-topic-rb1_gpu-v2-0-2d3d6a0db040@linaro.org> To: Will Deacon , Robin Murphy , Joerg Roedel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Michael Turquette , Stephen Boyd , Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , David Airlie , Daniel Vetter Cc: Marijn Suijten , linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Konrad Dybcio , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, Konrad Dybcio X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1708723303; l=4284; i=konrad.dybcio@linaro.org; s=20230215; h=from:subject:message-id; bh=XoBTIW3JvxqyhOVBniaSAgJX/HfeR30N24/h9GELtao=; b=iyeNEH8NgtNuGp9PiKFfHoNtEBU5HspXwnqNiwJ8nEArbl48Sx5/eLvJnsYlPRaxxqIXmjPoq 9KipGQ6ODS0B4x/m28GpVJ7dr7AF+xtGxfu/XHdsgaX67wqlG2hF/vM X-Developer-Key: i=konrad.dybcio@linaro.org; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= Commit 134b55b7e19f ("clk: qcom: support Huayra type Alpha PLL") introduced an entry to the alpha offsets array, but diving into QCM2290 downstream and some documentation, it turned out that the name Huayra apparently has been used quite liberally across many chips, even with noticeably different hardware. Introduce another set of offsets and a new configure function for the Huayra PLL found on QCM2290. This is required e.g. for the consumers of GPUCC_PLL0 to properly start. Signed-off-by: Konrad Dybcio Reviewed-by: Dmitry Baryshkov --- drivers/clk/qcom/clk-alpha-pll.c | 47 ++++++++++++++++++++++++++++++++++++++++ drivers/clk/qcom/clk-alpha-pll.h | 3 +++ 2 files changed, 50 insertions(+) diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c index 8a412ef47e16..82b71f24ee7d 100644 --- a/drivers/clk/qcom/clk-alpha-pll.c +++ b/drivers/clk/qcom/clk-alpha-pll.c @@ -83,6 +83,19 @@ const u8 clk_alpha_pll_regs[][PLL_OFF_MAX_REGS] = { [PLL_OFF_TEST_CTL_U] = 0x20, [PLL_OFF_STATUS] = 0x24, }, + [CLK_ALPHA_PLL_TYPE_HUAYRA_2290] = { + [PLL_OFF_L_VAL] = 0x04, + [PLL_OFF_ALPHA_VAL] = 0x08, + [PLL_OFF_USER_CTL] = 0x0c, + [PLL_OFF_CONFIG_CTL] = 0x10, + [PLL_OFF_CONFIG_CTL_U] = 0x14, + [PLL_OFF_CONFIG_CTL_U1] = 0x18, + [PLL_OFF_TEST_CTL] = 0x1c, + [PLL_OFF_TEST_CTL_U] = 0x20, + [PLL_OFF_TEST_CTL_U1] = 0x24, + [PLL_OFF_OPMODE] = 0x28, + [PLL_OFF_STATUS] = 0x38, + }, [CLK_ALPHA_PLL_TYPE_BRAMMO] = { [PLL_OFF_L_VAL] = 0x04, [PLL_OFF_ALPHA_VAL] = 0x08, @@ -779,6 +792,40 @@ static long clk_alpha_pll_round_rate(struct clk_hw *hw, unsigned long rate, return clamp(rate, min_freq, max_freq); } +void clk_huayra_2290_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, + const struct alpha_pll_config *config) +{ + u32 val; + + clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL(pll), config->config_ctl_val); + clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL_U(pll), config->config_ctl_hi_val); + clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL_U1(pll), config->config_ctl_hi1_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL(pll), config->test_ctl_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U(pll), config->test_ctl_hi_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U1(pll), config->test_ctl_hi1_val); + clk_alpha_pll_write_config(regmap, PLL_L_VAL(pll), config->l); + clk_alpha_pll_write_config(regmap, PLL_ALPHA_VAL(pll), config->alpha); + clk_alpha_pll_write_config(regmap, PLL_USER_CTL(pll), config->user_ctl_val); + + /* Set PLL_BYPASSNL */ + regmap_update_bits(regmap, PLL_MODE(pll), PLL_BYPASSNL, PLL_BYPASSNL); + regmap_read(regmap, PLL_MODE(pll), &val); + + /* Wait 5 us between setting BYPASS and deasserting reset */ + udelay(5); + + /* Take PLL out from reset state */ + regmap_update_bits(regmap, PLL_MODE(pll), PLL_RESET_N, PLL_RESET_N); + regmap_read(regmap, PLL_MODE(pll), &val); + + /* Wait 50us for PLL_LOCK_DET bit to go high */ + usleep_range(50, 55); + + /* Enable PLL output */ + regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, PLL_OUTCTRL); +} +EXPORT_SYMBOL(clk_huayra_2290_pll_configure); + static unsigned long alpha_huayra_pll_calc_rate(u64 prate, u32 l, u32 a) { diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h index fb6d50263bb9..d1cd52158c17 100644 --- a/drivers/clk/qcom/clk-alpha-pll.h +++ b/drivers/clk/qcom/clk-alpha-pll.h @@ -15,6 +15,7 @@ enum { CLK_ALPHA_PLL_TYPE_DEFAULT, CLK_ALPHA_PLL_TYPE_HUAYRA, + CLK_ALPHA_PLL_TYPE_HUAYRA_2290, CLK_ALPHA_PLL_TYPE_BRAMMO, CLK_ALPHA_PLL_TYPE_FABIA, CLK_ALPHA_PLL_TYPE_TRION, @@ -191,6 +192,8 @@ extern const struct clk_ops clk_alpha_pll_rivian_evo_ops; void clk_alpha_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, const struct alpha_pll_config *config); +void clk_huayra_2290_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, + const struct alpha_pll_config *config); void clk_fabia_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, const struct alpha_pll_config *config); void clk_trion_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,