linux-kernel - [PATCH 1/2] clk: meson: axg: add pcie pll cml gating

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Date:   Sun,  8 Dec 2019 22:03:19 +0100
From:   Remi Pommarel <repk@...plefau.lt>
To:     Neil Armstrong <narmstrong@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Yue Wang <yue.wang@...ogic.com>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        linux-amlogic@...ts.infradead.org, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org, Remi Pommarel <repk@...plefau.lt>
Subject: [PATCH 1/2] clk: meson: axg: add pcie pll cml gating

PCIE_PLL_CML_ENABLE is used to enable or disable pcie clock PAD
output reliably on AXG platforms.

Signed-off-by: Remi Pommarel <repk@...plefau.lt>
---
 drivers/clk/meson/axg.c              | 3 +++
 drivers/clk/meson/axg.h              | 2 +-
 include/dt-bindings/clock/axg-clkc.h | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/meson/axg.c b/drivers/clk/meson/axg.c
index 13fc0006f63d..ac9ab7f75ee8 100644
--- a/drivers/clk/meson/axg.c
+++ b/drivers/clk/meson/axg.c
@@ -1142,6 +1142,7 @@ static MESON_GATE(axg_vpu_intr, HHI_GCLK_MPEG2, 25);
 static MESON_GATE(axg_sec_ahb_ahb3_bridge, HHI_GCLK_MPEG2, 26);
 static MESON_GATE(axg_gic, HHI_GCLK_MPEG2, 30);
 static MESON_GATE(axg_mipi_enable, HHI_MIPI_CNTL0, 29);
+static MESON_GATE(axg_pcie_pll_cml_enable, HHI_MIPI_CNTL0, 26);
 
 /* Always On (AO) domain gates */
 
@@ -1246,6 +1247,7 @@ static struct clk_hw_onecell_data axg_hw_onecell_data = {
 		[CLKID_HIFI_PLL_DCO]		= &axg_hifi_pll_dco.hw,
 		[CLKID_PCIE_PLL_DCO]		= &axg_pcie_pll_dco.hw,
 		[CLKID_PCIE_PLL_OD]		= &axg_pcie_pll_od.hw,
+		[CLKID_PCIE_PLL_CML_ENABLE]	= &axg_pcie_pll_cml_enable.hw,
 		[NR_CLKS]			= NULL,
 	},
 	.num = NR_CLKS,
@@ -1341,6 +1343,7 @@ static struct clk_regmap *const axg_clk_regmaps[] = {
 	&axg_hifi_pll_dco,
 	&axg_pcie_pll_dco,
 	&axg_pcie_pll_od,
+	&axg_pcie_pll_cml_enable,
 };
 
 static const struct meson_eeclkc_data axg_clkc_data = {
diff --git a/drivers/clk/meson/axg.h b/drivers/clk/meson/axg.h
index 0431dabac629..d65670d6c607 100644
--- a/drivers/clk/meson/axg.h
+++ b/drivers/clk/meson/axg.h
@@ -140,7 +140,7 @@
 #define CLKID_PCIE_PLL_DCO			89
 #define CLKID_PCIE_PLL_OD			90
 
-#define NR_CLKS					91
+#define NR_CLKS					92
 
 /* include the CLKIDs that have been made part of the DT binding */
 #include <dt-bindings/clock/axg-clkc.h>
diff --git a/include/dt-bindings/clock/axg-clkc.h b/include/dt-bindings/clock/axg-clkc.h
index fd1f938c38d1..218a05ff508d 100644
--- a/include/dt-bindings/clock/axg-clkc.h
+++ b/include/dt-bindings/clock/axg-clkc.h
@@ -72,5 +72,6 @@
 #define CLKID_PCIE_CML_EN1			80
 #define CLKID_MIPI_ENABLE			81
 #define CLKID_GEN_CLK				84
+#define CLKID_PCIE_PLL_CML_ENABLE		91
 
 #endif /* __AXG_CLKC_H */
-- 
2.24.0