[PATCH 2/4] arm64: amlogic: mmc: meson-gx: Add dts binding include for core, tx, rx eMMC/SD/SDIO phase clock settings from devicetree data

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The mmc driver has the same phase values for all meson platforms. However,
some platforms (and even some boards) require different values. This patch
transfers the values from the set in the code to the variables in the
device-tree file.

Signed-off-by: Vyacheslav Bocharov <adeep@xxxxxxxxx>

 create mode 100644 include/dt-bindings/mmc/meson-gx-mmc.h

diff --git a/include/dt-bindings/mmc/meson-gx-mmc.h b/include/dt-bindings/mmc/meson-gx-mmc.h
new file mode 100644
index 000000000000..cfc4a9d75b2b
--- /dev/null
+++ b/include/dt-bindings/mmc/meson-gx-mmc.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: (GPL-2.0+ or MIT) */
+/*
+ * Copyright (c) 2022 JetHome, Vyacheslav Bocharov
+ * Author: Vyacheslav Bocharov <adeep@xxxxxxxxx>
+ */
+
+#ifndef _DT_BINDINGS_MESON_GX_MMC_H
+#define _DT_BINDINGS_MESON_GX_MMC_H
+
+/*
+ * Cfg_rx_phase: RX clock phase
+ * bits: 9:8 R/W
+ * default: 0
+ * Recommended value: 0
+ *
+ * Cfg_tx_phase: TX clock phase
+ * bits: 9:8 R/W
+ * default: 0
+ * Recommended value: 2
+ *
+ * Cfg_co_phase: Core clock phase
+ * bits: 9:8 R/W
+ * default: 0
+ * Recommended value: 2
+ *
+ * values: 0: 0 phase, 1: 90 phase, 2: 180 phase, 3: 270 phase.
+ */
+
+#define   CLK_PHASE_0 0
+#define   CLK_PHASE_90 1
+#define   CLK_PHASE_180 2
+#define   CLK_PHASE_270 3
+
+
+#endif
-- 
2.30.2




[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux