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From:   Christian Marangi <ansuelsmth@gmail.com>
To:     Bjorn Andersson <andersson@kernel.org>,
        Andy Gross <agross@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>, linux-arm-msm@vger.kernel.org,
        linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org
Cc:     Christian Marangi <ansuelsmth@gmail.com>
Subject: [PATCH v7 3/3] clk: qcom: gcc-ipq8074: rework nss_port5/6 clock to multiple conf
Date:   Fri, 24 Nov 2023 16:18:47 +0100
Message-Id: <20231124151847.1915-4-ansuelsmth@gmail.com>
In-Reply-To: <20231124151847.1915-1-ansuelsmth@gmail.com>
References: <20231124151847.1915-1-ansuelsmth@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Rework nss_port5/6 to use the new multiple configuration implementation
and correctly fix the clocks for these port under some corner case.

This is particularly relevant for device that have 2.5G or 10G port
connected to port5 or port 6 on ipq8074. As the parent are shared
across multiple port it may be required to select the correct
configuration to accomplish the desired clock. Without this patch such
port doesn't work in some specific ethernet speed as the clock will be
set to the wrong frequency as we just select the first configuration for
the related frequency instead of selecting the best one.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
 drivers/clk/qcom/gcc-ipq8074.c | 120 +++++++++++++++++++++------------
 1 file changed, 76 insertions(+), 44 deletions(-)

diff --git a/drivers/clk/qcom/gcc-ipq8074.c b/drivers/clk/qcom/gcc-ipq8074.c
index 63ac2ced76bb..595cb7bd4834 100644
--- a/drivers/clk/qcom/gcc-ipq8074.c
+++ b/drivers/clk/qcom/gcc-ipq8074.c
@@ -1681,15 +1681,23 @@ static struct clk_regmap_div nss_port4_tx_div_clk_src = {
 	},
 };
 
-static const struct freq_tbl ftbl_nss_port5_rx_clk_src[] = {
-	F(19200000, P_XO, 1, 0, 0),
-	F(25000000, P_UNIPHY1_RX, 12.5, 0, 0),
-	F(25000000, P_UNIPHY0_RX, 5, 0, 0),
-	F(78125000, P_UNIPHY1_RX, 4, 0, 0),
-	F(125000000, P_UNIPHY1_RX, 2.5, 0, 0),
-	F(125000000, P_UNIPHY0_RX, 1, 0, 0),
-	F(156250000, P_UNIPHY1_RX, 2, 0, 0),
-	F(312500000, P_UNIPHY1_RX, 1, 0, 0),
+static const struct freq_conf ftbl_nss_port5_rx_clk_src_25[] = {
+	C(P_UNIPHY1_RX, 12.5, 0, 0),
+	C(P_UNIPHY0_RX, 5, 0, 0),
+};
+
+static const struct freq_conf ftbl_nss_port5_rx_clk_src_125[] = {
+	C(P_UNIPHY1_RX, 2.5, 0, 0),
+	C(P_UNIPHY0_RX, 1, 0, 0),
+};
+
+static const struct freq_multi_tbl ftbl_nss_port5_rx_clk_src[] = {
+	FMS(19200000, P_XO, 1, 0, 0),
+	FM(25000000, ftbl_nss_port5_rx_clk_src_25),
+	FMS(78125000, P_UNIPHY1_RX, 4, 0, 0),
+	FM(125000000, ftbl_nss_port5_rx_clk_src_125),
+	FMS(156250000, P_UNIPHY1_RX, 2, 0, 0),
+	FMS(312500000, P_UNIPHY1_RX, 1, 0, 0),
 	{ }
 };
 
@@ -1716,14 +1724,14 @@ gcc_xo_uniphy0_rx_tx_uniphy1_rx_tx_ubi32_bias_map[] = {
 
 static struct clk_rcg2 nss_port5_rx_clk_src = {
 	.cmd_rcgr = 0x68060,
-	.freq_tbl = ftbl_nss_port5_rx_clk_src,
+	.freq_multi_tbl = ftbl_nss_port5_rx_clk_src,
 	.hid_width = 5,
 	.parent_map = gcc_xo_uniphy0_rx_tx_uniphy1_rx_tx_ubi32_bias_map,
 	.clkr.hw.init = &(struct clk_init_data){
 		.name = "nss_port5_rx_clk_src",
 		.parent_data = gcc_xo_uniphy0_rx_tx_uniphy1_rx_tx_ubi32_bias,
 		.num_parents = ARRAY_SIZE(gcc_xo_uniphy0_rx_tx_uniphy1_rx_tx_ubi32_bias),
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_fm_ops,
 	},
 };
 
@@ -1743,15 +1751,23 @@ static struct clk_regmap_div nss_port5_rx_div_clk_src = {
 	},
 };
 
-static const struct freq_tbl ftbl_nss_port5_tx_clk_src[] = {
-	F(19200000, P_XO, 1, 0, 0),
-	F(25000000, P_UNIPHY1_TX, 12.5, 0, 0),
-	F(25000000, P_UNIPHY0_TX, 5, 0, 0),
-	F(78125000, P_UNIPHY1_TX, 4, 0, 0),
-	F(125000000, P_UNIPHY1_TX, 2.5, 0, 0),
-	F(125000000, P_UNIPHY0_TX, 1, 0, 0),
-	F(156250000, P_UNIPHY1_TX, 2, 0, 0),
-	F(312500000, P_UNIPHY1_TX, 1, 0, 0),
+static const struct freq_conf ftbl_nss_port5_tx_clk_src_25[] = {
+	C(P_UNIPHY1_TX, 12.5, 0, 0),
+	C(P_UNIPHY0_TX, 5, 0, 0),
+};
+
+static const struct freq_conf ftbl_nss_port5_tx_clk_src_125[] = {
+	C(P_UNIPHY1_TX, 2.5, 0, 0),
+	C(P_UNIPHY0_TX, 1, 0, 0),
+};
+
+static const struct freq_multi_tbl ftbl_nss_port5_tx_clk_src[] = {
+	FMS(19200000, P_XO, 1, 0, 0),
+	FM(25000000, ftbl_nss_port5_tx_clk_src_25),
+	FMS(78125000, P_UNIPHY1_TX, 4, 0, 0),
+	FM(125000000, ftbl_nss_port5_tx_clk_src_125),
+	FMS(156250000, P_UNIPHY1_TX, 2, 0, 0),
+	FMS(312500000, P_UNIPHY1_TX, 1, 0, 0),
 	{ }
 };
 
@@ -1778,14 +1794,14 @@ gcc_xo_uniphy0_tx_rx_uniphy1_tx_rx_ubi32_bias_map[] = {
 
 static struct clk_rcg2 nss_port5_tx_clk_src = {
 	.cmd_rcgr = 0x68068,
-	.freq_tbl = ftbl_nss_port5_tx_clk_src,
+	.freq_multi_tbl = ftbl_nss_port5_tx_clk_src,
 	.hid_width = 5,
 	.parent_map = gcc_xo_uniphy0_tx_rx_uniphy1_tx_rx_ubi32_bias_map,
 	.clkr.hw.init = &(struct clk_init_data){
 		.name = "nss_port5_tx_clk_src",
 		.parent_data = gcc_xo_uniphy0_tx_rx_uniphy1_tx_rx_ubi32_bias,
 		.num_parents = ARRAY_SIZE(gcc_xo_uniphy0_tx_rx_uniphy1_tx_rx_ubi32_bias),
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_fm_ops,
 	},
 };
 
@@ -1805,15 +1821,23 @@ static struct clk_regmap_div nss_port5_tx_div_clk_src = {
 	},
 };
 
-static const struct freq_tbl ftbl_nss_port6_rx_clk_src[] = {
-	F(19200000, P_XO, 1, 0, 0),
-	F(25000000, P_UNIPHY2_RX, 5, 0, 0),
-	F(25000000, P_UNIPHY2_RX, 12.5, 0, 0),
-	F(78125000, P_UNIPHY2_RX, 4, 0, 0),
-	F(125000000, P_UNIPHY2_RX, 1, 0, 0),
-	F(125000000, P_UNIPHY2_RX, 2.5, 0, 0),
-	F(156250000, P_UNIPHY2_RX, 2, 0, 0),
-	F(312500000, P_UNIPHY2_RX, 1, 0, 0),
+static const struct freq_conf ftbl_nss_port6_rx_clk_src_25[] = {
+	C(P_UNIPHY2_RX, 5, 0, 0),
+	C(P_UNIPHY2_RX, 12.5, 0, 0),
+};
+
+static const struct freq_conf ftbl_nss_port6_rx_clk_src_125[] = {
+	C(P_UNIPHY2_RX, 1, 0, 0),
+	C(P_UNIPHY2_RX, 2.5, 0, 0),
+};
+
+static const struct freq_multi_tbl ftbl_nss_port6_rx_clk_src[] = {
+	FMS(19200000, P_XO, 1, 0, 0),
+	FM(25000000, ftbl_nss_port6_rx_clk_src_25),
+	FMS(78125000, P_UNIPHY2_RX, 4, 0, 0),
+	FM(125000000, ftbl_nss_port6_rx_clk_src_125),
+	FMS(156250000, P_UNIPHY2_RX, 2, 0, 0),
+	FMS(312500000, P_UNIPHY2_RX, 1, 0, 0),
 	{ }
 };
 
@@ -1835,14 +1859,14 @@ static const struct parent_map gcc_xo_uniphy2_rx_tx_ubi32_bias_map[] = {
 
 static struct clk_rcg2 nss_port6_rx_clk_src = {
 	.cmd_rcgr = 0x68070,
-	.freq_tbl = ftbl_nss_port6_rx_clk_src,
+	.freq_multi_tbl = ftbl_nss_port6_rx_clk_src,
 	.hid_width = 5,
 	.parent_map = gcc_xo_uniphy2_rx_tx_ubi32_bias_map,
 	.clkr.hw.init = &(struct clk_init_data){
 		.name = "nss_port6_rx_clk_src",
 		.parent_data = gcc_xo_uniphy2_rx_tx_ubi32_bias,
 		.num_parents = ARRAY_SIZE(gcc_xo_uniphy2_rx_tx_ubi32_bias),
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_fm_ops,
 	},
 };
 
@@ -1862,15 +1886,23 @@ static struct clk_regmap_div nss_port6_rx_div_clk_src = {
 	},
 };
 
-static const struct freq_tbl ftbl_nss_port6_tx_clk_src[] = {
-	F(19200000, P_XO, 1, 0, 0),
-	F(25000000, P_UNIPHY2_TX, 5, 0, 0),
-	F(25000000, P_UNIPHY2_TX, 12.5, 0, 0),
-	F(78125000, P_UNIPHY2_TX, 4, 0, 0),
-	F(125000000, P_UNIPHY2_TX, 1, 0, 0),
-	F(125000000, P_UNIPHY2_TX, 2.5, 0, 0),
-	F(156250000, P_UNIPHY2_TX, 2, 0, 0),
-	F(312500000, P_UNIPHY2_TX, 1, 0, 0),
+static const struct freq_conf ftbl_nss_port6_tx_clk_src_25[] = {
+	C(P_UNIPHY2_TX, 5, 0, 0),
+	C(P_UNIPHY2_TX, 12.5, 0, 0),
+};
+
+static const struct freq_conf ftbl_nss_port6_tx_clk_src_125[] = {
+	C(P_UNIPHY2_TX, 1, 0, 0),
+	C(P_UNIPHY2_TX, 2.5, 0, 0),
+};
+
+static const struct freq_multi_tbl ftbl_nss_port6_tx_clk_src[] = {
+	FMS(19200000, P_XO, 1, 0, 0),
+	FM(25000000, ftbl_nss_port6_tx_clk_src_25),
+	FMS(78125000, P_UNIPHY1_RX, 4, 0, 0),
+	FM(125000000, ftbl_nss_port6_tx_clk_src_125),
+	FMS(156250000, P_UNIPHY1_RX, 2, 0, 0),
+	FMS(312500000, P_UNIPHY1_RX, 1, 0, 0),
 	{ }
 };
 
@@ -1892,14 +1924,14 @@ static const struct parent_map gcc_xo_uniphy2_tx_rx_ubi32_bias_map[] = {
 
 static struct clk_rcg2 nss_port6_tx_clk_src = {
 	.cmd_rcgr = 0x68078,
-	.freq_tbl = ftbl_nss_port6_tx_clk_src,
+	.freq_multi_tbl = ftbl_nss_port6_tx_clk_src,
 	.hid_width = 5,
 	.parent_map = gcc_xo_uniphy2_tx_rx_ubi32_bias_map,
 	.clkr.hw.init = &(struct clk_init_data){
 		.name = "nss_port6_tx_clk_src",
 		.parent_data = gcc_xo_uniphy2_tx_rx_ubi32_bias,
 		.num_parents = ARRAY_SIZE(gcc_xo_uniphy2_tx_rx_ubi32_bias),
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_fm_ops,
 	},
 };
 
-- 
2.40.1