diff mbox series

[v1,5/6] clk: mediatek: mt8192: Add support for frequency hopping through FHCTL

Message ID 20221222155147.158837-6-angelogioacchino.delregno@collabora.com
State New
Headers
Series MediaTek Frequency Hopping: MT6795/8173/92/95 |

Commit Message

AngeloGioacchino Del Regno Dec. 22, 2022, 3:51 p.m. UTC 
  Add FHCTL parameters and register PLLs through FHCTL to add support
for frequency hopping and SSC. FHCTL will be enabled only on PLLs
specified in devicetree.

This commit brings functional changes only upon addition of
devicetree configuration.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/clk/mediatek/clk-mt8192.c | 67 ++++++++++++++++++++++++++++++-
 1 file changed, 65 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/clk/mediatek/clk-mt8192.c b/drivers/clk/mediatek/clk-mt8192.c
index adde457e6277..648f88d41622 100644
--- a/drivers/clk/mediatek/clk-mt8192.c
+++ b/drivers/clk/mediatek/clk-mt8192.c
@@ -12,10 +12,12 @@ 
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 
+#include "clk-fhctl.h"
 #include "clk-gate.h"
 #include "clk-mtk.h"
 #include "clk-mux.h"
 #include "clk-pll.h"
+#include "clk-pllfh.h"
 
 #include <dt-bindings/clock/mt8192-clk.h>
 #include <dt-bindings/reset/mt8192-resets.h>
@@ -1042,6 +1044,57 @@  static const struct mtk_pll_data plls[] = {
 	      0, 0, 32, 0x0330, 24, 0, 0, 0, 0x0334, 0),
 };
 
+enum fh_pll_id {
+	FH_ARMPLL_LL,
+	FH_ARMPLL_BL0,
+	FH_ARMPLL_BL1,
+	FH_ARMPLL_BL2,
+	FH_ARMPLL_BL3,
+	FH_CCIPLL,
+	FH_MFGPLL,
+	FH_MEMPLL,
+	FH_MPLL,
+	FH_MMPLL,
+	FH_MAINPLL,
+	FH_MSDCPLL,
+	FH_ADSPPLL,
+	FH_APUPLL,
+	FH_TVDPLL,
+	FH_NR_FH,
+};
+
+#define FH(_pllid, _fhid, _offset) {					\
+		.data = {						\
+			.pll_id = _pllid,				\
+			.fh_id = _fhid,					\
+			.fh_ver = FHCTL_PLLFH_V2,			\
+			.fhx_offset = _offset,				\
+			.dds_mask = GENMASK(21, 0),			\
+			.slope0_value = 0x6003c97,			\
+			.slope1_value = 0x6003c97,			\
+			.sfstrx_en = BIT(2),				\
+			.frddsx_en = BIT(1),				\
+			.fhctlx_en = BIT(0),				\
+			.tgl_org = BIT(31),				\
+			.dvfs_tri = BIT(31),				\
+			.pcwchg = BIT(31),				\
+			.dt_val = 0x0,					\
+			.df_val = 0x9,					\
+			.updnlmt_shft = 16,				\
+			.msk_frddsx_dys = GENMASK(23, 20),		\
+			.msk_frddsx_dts = GENMASK(19, 16),		\
+		},							\
+	}
+
+static struct mtk_pllfh_data pllfhs[] = {
+	FH(CLK_APMIXED_MFGPLL, FH_MFGPLL, 0xb4),
+	FH(CLK_APMIXED_MMPLL, FH_MMPLL, 0xf0),
+	FH(CLK_APMIXED_MAINPLL, FH_MAINPLL, 0x104),
+	FH(CLK_APMIXED_MSDCPLL, FH_MSDCPLL, 0x118),
+	FH(CLK_APMIXED_ADSPPLL, FH_ADSPPLL, 0x12c),
+	FH(CLK_APMIXED_TVDPLL, FH_TVDPLL, 0x154),
+};
+
 /* Register mux notifier for MFG mux */
 static int clk_mt8192_reg_mfg_mux_notifier(struct device *dev, struct clk *clk)
 {
@@ -1068,18 +1121,25 @@  static int clk_mt8192_apmixed_probe(struct platform_device *pdev)
 {
 	struct clk_hw_onecell_data *clk_data;
 	struct device_node *node = pdev->dev.of_node;
+	const u8 *fhctl_node = "mediatek,mt8192-fhctl";
 	int r;
 
 	clk_data = mtk_alloc_clk_data(CLK_APMIXED_NR_CLK);
 	if (!clk_data)
 		return -ENOMEM;
 
-	mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
+	fhctl_parse_dt(fhctl_node, pllfhs, ARRAY_SIZE(pllfhs));
+
+	r = mtk_clk_register_pllfhs(node, plls, ARRAY_SIZE(plls),
+				    pllfhs, ARRAY_SIZE(pllfhs), clk_data);
+	if (r)
+		goto free_clk_data;
+
 	r = mtk_clk_register_gates(node, apmixed_clks,
 				   ARRAY_SIZE(apmixed_clks), clk_data,
 				   &pdev->dev);
 	if (r)
-		goto free_clk_data;
+		goto unregister_plls;
 
 	r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
 	if (r)
@@ -1089,6 +1149,9 @@  static int clk_mt8192_apmixed_probe(struct platform_device *pdev)
 
 unregister_gates:
 	mtk_clk_unregister_gates(apmixed_clks, ARRAY_SIZE(apmixed_clks), clk_data);
+unregister_plls:
+	mtk_clk_unregister_pllfhs(plls, ARRAY_SIZE(plls), pllfhs,
+				  ARRAY_SIZE(pllfhs), clk_data);
 free_clk_data:
 	mtk_free_clk_data(clk_data);
 	return r;