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From:   Brian Norris <briannorris@chromium.org>
To:     MyungJoo Ham <myungjoo.ham@samsung.com>,
        Kyungmin Park <kyungmin.park@samsung.com>,
        Chanwoo Choi <cw00.choi@samsung.com>,
        Rob Herring <robh+dt@kernel.org>
Cc:     linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org,
        Lin Huang <hl@rock-chips.com>,
        linux-arm-kernel@lists.infradead.org,
        Derek Basehore <dbasehore@chromium.org>,
        devicetree@vger.kernel.org, linux-pm@vger.kernel.org,
        Heiko Stuebner <heiko@sntech.de>,
        Brian Norris <briannorris@chromium.org>
Subject: [PATCH v2 02/15] dt-bindings: devfreq: rk3399_dmc: Deprecate unused/redundant properties
Date:   Thu, 27 Jan 2022 15:07:13 -0800
Message-Id: <20220127150615.v2.2.I5ba582cd678d34c03d647e5500db8e33b7524d66@changeid>
In-Reply-To: <20220127230727.3369358-1-briannorris@chromium.org>
References: <20220127230727.3369358-1-briannorris@chromium.org>
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These DRAM configuration properties are all handled in ARM Trusted
Firmware (and have been since the early days of this SoC), and there are
no in-tree users of the DMC binding yet. It's better to just defer to
firmware instead of maintaining this large list of properties.

There's also some confusion about units: many of these are specified in
MHz, but the downstream users and driver code are treating them as Hz, I
believe. Rather than straighten all that out, I just drop them.

Signed-off-by: Brian Norris <briannorris@chromium.org>
---

(no changes since v1)

 .../bindings/devfreq/rk3399_dmc.yaml          | 42 +++++++++----------
 1 file changed, 21 insertions(+), 21 deletions(-)

diff --git a/Documentation/devicetree/bindings/devfreq/rk3399_dmc.yaml b/Documentation/devicetree/bindings/devfreq/rk3399_dmc.yaml
index 467a7b5b374b..fd62a8cd62d5 100644
--- a/Documentation/devicetree/bindings/devfreq/rk3399_dmc.yaml
+++ b/Documentation/devicetree/bindings/devfreq/rk3399_dmc.yaml
@@ -46,6 +46,7 @@ properties:
       finishes, a DCF interrupt is triggered.
 
   rockchip,ddr3_speed_bin:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       For values, reference include/dt-bindings/clock/rk3399-ddr.h. Selects the
@@ -92,6 +93,7 @@ properties:
       if bus is idle for standby_idle * DFI clock cycles.
 
   rockchip,dram_dll_dis_freq:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description: |
       Defines the DDR3 DLL bypass frequency in MHz. When DDR frequency is less
@@ -99,6 +101,7 @@ properties:
       Note: if DLL was bypassed, the odt will also stop working.
 
   rockchip,phy_dll_dis_freq:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description: |
       Defines the PHY dll bypass frequency in MHz (Mega Hz). When DDR frequency
@@ -106,6 +109,7 @@ properties:
       Note: PHY DLL and PHY ODT are independent.
 
   rockchip,auto_pd_dis_freq:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       Defines the auto PD disable frequency in MHz.
@@ -119,18 +123,21 @@ properties:
       disabled.
 
   rockchip,ddr3_drv:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is DDR3, this parameter defines the DRAM side drive
       strength in ohms. Default value is 40.
 
   rockchip,ddr3_odt:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is DDR3, this parameter defines the DRAM side ODT
       strength in ohms. Default value is 120.
 
   rockchip,phy_ddr3_ca_drv:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is DDR3, this parameter defines the phy side CA line
@@ -138,12 +145,14 @@ properties:
       Default value is 40.
 
   rockchip,phy_ddr3_dq_drv:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is DDR3, this parameter defines the PHY side DQ line
       (including DQS/DQ/DM line) drive strength. Default value is 40.
 
   rockchip,phy_ddr3_odt:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is DDR3, this parameter defines the PHY side ODT
@@ -158,18 +167,21 @@ properties:
       disabled.
 
   rockchip,lpddr3_drv:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is LPDDR3, this parameter defines the DRAM side drive
       strength in ohms. Default value is 34.
 
   rockchip,lpddr3_odt:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is LPDDR3, this parameter defines the DRAM side ODT
       strength in ohms. Default value is 240.
 
   rockchip,phy_lpddr3_ca_drv:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is LPDDR3, this parameter defines the PHY side CA line
@@ -177,12 +189,14 @@ properties:
       Default value is 40.
 
   rockchip,phy_lpddr3_dq_drv:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is LPDDR3, this parameter defines the PHY side DQ line
       (including DQS/DQ/DM line) drive strength. Default value is 40.
 
   rockchip,phy_lpddr3_odt:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When dram type is LPDDR3, this parameter define the phy side odt
@@ -197,42 +211,49 @@ properties:
       disabled.
 
   rockchip,lpddr4_drv:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is LPDDR4, this parameter defines the DRAM side drive
       strength in ohms. Default value is 60.
 
   rockchip,lpddr4_dq_odt:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is LPDDR4, this parameter defines the DRAM side ODT on
       DQS/DQ line strength in ohms. Default value is 40.
 
   rockchip,lpddr4_ca_odt:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is LPDDR4, this parameter defines the DRAM side ODT on
       CA line strength in ohms. Default value is 40.
 
   rockchip,phy_lpddr4_ca_drv:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is LPDDR4, this parameter defines the PHY side CA line
       (including command address line) drive strength. Default value is 40.
 
   rockchip,phy_lpddr4_ck_cs_drv:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is LPDDR4, this parameter defines the PHY side clock
       line and CS line drive strength. Default value is 80.
 
   rockchip,phy_lpddr4_dq_drv:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is LPDDR4, this parameter defines the PHY side DQ line
       (including DQS/DQ/DM line) drive strength. Default value is 80.
 
   rockchip,phy_lpddr4_odt:
+    deprecated: true
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       When the DRAM type is LPDDR4, this parameter defines the PHY side ODT
@@ -261,33 +282,12 @@ examples:
       clock-names = "dmc_clk";
       operating-points-v2 = <&dmc_opp_table>;
       center-supply = <&ppvar_centerlogic>;
-      rockchip,ddr3_speed_bin = <21>;
       rockchip,pd_idle = <0x40>;
       rockchip,sr_idle = <0x2>;
       rockchip,sr_mc_gate_idle = <0x3>;
       rockchip,srpd_lite_idle = <0x4>;
       rockchip,standby_idle = <0x2000>;
-      rockchip,dram_dll_dis_freq = <300>;
-      rockchip,phy_dll_dis_freq = <125>;
-      rockchip,auto_pd_dis_freq = <666>;
       rockchip,ddr3_odt_dis_freq = <333>;
-      rockchip,ddr3_drv = <40>;
-      rockchip,ddr3_odt = <120>;
-      rockchip,phy_ddr3_ca_drv = <40>;
-      rockchip,phy_ddr3_dq_drv = <40>;
-      rockchip,phy_ddr3_odt = <240>;
       rockchip,lpddr3_odt_dis_freq = <333>;
-      rockchip,lpddr3_drv = <34>;
-      rockchip,lpddr3_odt = <240>;
-      rockchip,phy_lpddr3_ca_drv = <40>;
-      rockchip,phy_lpddr3_dq_drv = <40>;
-      rockchip,phy_lpddr3_odt = <240>;
       rockchip,lpddr4_odt_dis_freq = <333>;
-      rockchip,lpddr4_drv = <60>;
-      rockchip,lpddr4_dq_odt = <40>;
-      rockchip,lpddr4_ca_odt = <40>;
-      rockchip,phy_lpddr4_ca_drv = <40>;
-      rockchip,phy_lpddr4_ck_cs_drv = <80>;
-      rockchip,phy_lpddr4_dq_drv = <80>;
-      rockchip,phy_lpddr4_odt = <60>;
     };
-- 
2.35.0.rc0.227.g00780c9af4-goog